What is 4.5 out of 21 as a percentage?
Percentage Calculator
4.5 is what percent of 21?
In the following example consider that:
- The percentage figure is represented by X%
- The whole amount is represented by W
- The portion amount or part is represented by P
The following question is of the type "P is what percent of W,” where W is the whole amount and P is the portion amount". That is, this problem is of the type "calculating the percentage from a whole knowing the part".
Solution Steps
Here is the solution work:
Step 1: first determine the value of the whole amount. We assume that it is 21.
(notice that this corresponds to 100%).Step 2: Remember that we are looking for the percentage 'percentage'.
To solve this question, use the following formula:
X% = 100 × PW
This formula says that:
"To find the percentage from the whole, knowing the part, divide the part by the whole then multiply the result by 100".
Step 3: replacing the values into the formula, we get:
X% = 100 × 4.521
X% = 45021
X% = 21.43 (answer)
So, the answer is 4.5 is 21.43 percent of 21
What is 4.5 out of 21 as a decimal?
To solve this question, use the following formula:
X = PW
"To find 'P' out of 'W', just divide the part by the whole.". So,
X = 4.521
X = 4.521 = 0.2143
Thus, the answer is 4.5 is 0.2143 out of 21 as a decimal.