Finding the Fourth Proportional to 20,622,387.96, 28,459,346.70 and 11,330,077.80
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Solution
The fourth proportional to 20,622,387.96, 28,459,346.70 and 11,330,077.80 is: 15,635,755.32
Step by Step Solution
- Step 1: Write the proportion equation
20,622,387.96 : 28,459,346.70 = 11,330,077.80 : x - Step 2: Convert to fraction form
20,622,387.96/28,459,346.70 = 11,330,077.80/x - Step 3: Cross multiply
20,622,387.96x = 28,459,346.70 × 11,330,077.80 - Step 4: Simplify right side
20,622,387.96x = 322,446,612,248,173.25 - Step 5: Solve for x
x = 322,446,612,248,173.25/20,622,387.96 - Step 6: Final answer
x = 15,635,755.32
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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.