21 is what percent of 533171 - 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 533171 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 533171, so we can write it down as 100%=533171.
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%=533171
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%=533171/21
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 533171

100%/x%=533171/21
(100/x)*x=(533171/21)*x       - we multiply both sides of the equation by x
100=25389.095238095*x       - we divide both sides of the equation by (25389.095238095) to get x
100/25389.095238095=x
0.0039386988414599=x
x=0.0039386988414599

now we have:
21 is 0.0039386988414599% of 533171