21 is what percent of 19.22 - 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 19.22 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 100% equals 19.22, so we can write it down as 100%=19.22.
4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.
5. Now we have two simple equations:
1) 100%=19.22
2) x%=21
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:
100%/x%=19.22/21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21 is what percent of 19.22

100%/x%=19.22/21
(100/x)*x=(19.22/21)*x       - we multiply both sides of the equation by x
100=0.9152380952381*x       - we divide both sides of the equation by (0.9152380952381) to get x
100/0.9152380952381=x
109.26118626431=x
x=109.26118626431

now we have:
21 is 109.26118626431% of 19.22