What is 16.18 percent of 21 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 21 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 21 is 100%, so we can write it down as 21=100%.
4. We know, that x is 16.18% of the output value, so we can write it down as x=16.18%.
5. Now we have two simple equations:
1) 21=100%
2) x=16.18%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
21/x=100%/16.18%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 16.18% of 21

21/x=100/16.18
(21/x)*x=(100/16.18)*x       - we multiply both sides of the equation by x
21=6.1804697156984*x       - we divide both sides of the equation by (6.1804697156984) to get x
21/6.1804697156984=x
3.3978=x
x=3.3978

now we have:
16.18% of 21=3.3978