What is 21.11 percent of 20 - 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 20 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 20 is 100%, so we can write it down as 20=100%.
4. We know, that x is 21.11% of the output value, so we can write it down as x=21.11%.
5. Now we have two simple equations:
1) 20=100%
2) x=21.11%
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:
20/x=100%/21.11%
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 21.11% of 20

20/x=100/21.11
(20/x)*x=(100/21.11)*x       - we multiply both sides of the equation by x
20=4.7370914258645*x       - we divide both sides of the equation by (4.7370914258645) to get x
20/4.7370914258645=x
4.222=x
x=4.222

now we have:
21.11% of 20=4.222