What is 18.48 percent of 21.09 - 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 21.09 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 21.09 is 100%, so we can write it down as 21.09=100%.
4. We know, that x is 18.48% of the output value, so we can write it down as x=18.48%.
5. Now we have two simple equations:
1) 21.09=100%
2) x=18.48%
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:
21.09/x=100%/18.48%
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 18.48% of 21.09

21.09/x=100/18.48
(21.09/x)*x=(100/18.48)*x       - we multiply both sides of the equation by x
21.09=5.4112554112554*x       - we divide both sides of the equation by (5.4112554112554) to get x
21.09/5.4112554112554=x
3.897432=x
x=3.897432

now we have:
18.48% of 21.09=3.897432