Enter proportion values below:

  
---------- ----------
  
  
Denominator 2  =  Denominator 1 * Numerator 2
  Numerator 1

x  =  4 * 30
  9

x  =  120
  9

Answer
Success!
x = 13.333333333333

↓Steps Explained:↓

You entered the following equivalent proportions:

9
4
=
  
30
x

Define the proportion formula:

If 2 proportions are equal:
we can cross multiply to get:

Numerator 1
Denominator 1
=
  
Numerator 2
Denominator 2

Numerator 1 * Denominator 2 = Denominator 1 * Numerator 2

Solving for Denominator 2 we get:

Denominator 2  =  Denominator 1 * Numerator 2
  Numerator 1

Evaluate and simplfy

x  =  4 * 30
  9

x  =  120
  9

Final Answer

x = 13.333333333333
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