# How much is 4.2 percent of thirty

Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: What is 4.2 (4.2%) percent (%) of thirty (30)? Or may be: How much is 4.2 percent of thirty. See the solutions to these problems just after the percentage calculator below.

See the solutions to these problems just after the percentage calculator below.

## How to work out percentages - Step by Step

Here are the solutions to the questions stated above:

### 1) What is 4.2% of 30?

Always use this formula to find a percentage:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{4.2} / _{100} = ^{Part} / _{30}

Cross multiply:

4.2 x 30 = 100 x Part, or

126 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{126} / _{100} = 1.26

### 2) 4.2 is what percent of 30?

Use again the same percentage formula:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{%} / _{100} = ^{4.2} / _{30}

Cross multiply:

% x 30 = 4.2 x 100

Divide by 30 and get the percentage:

% = ^{4.2 x 100} / _{30} = 14%