Finding the Fourth Proportional to 20,089,430.97, 27,729,314.80 and 13,121,173.78
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Solution
The fourth proportional to 20,089,430.97, 27,729,314.80 and 13,121,173.78 is: 18,111,073.38
Step by Step Solution
- Step 1: Write the proportion equation
20,089,430.97 : 27,729,314.80 = 13,121,173.78 : x - Step 2: Convert to fraction form
20,089,430.97/27,729,314.80 = 13,121,173.78/x - Step 3: Cross multiply
20,089,430.97x = 27,729,314.80 × 13,121,173.78 - Step 4: Simplify right side
20,089,430.97x = 363,841,158,418,783.75 - Step 5: Solve for x
x = 363,841,158,418,783.75/20,089,430.97 - Step 6: Final answer
x = 18,111,073.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.