Finding the Fourth Proportional to 15,372,057.20, 21,213,068.96 and 8,402,421.92
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Solution
The fourth proportional to 15,372,057.20, 21,213,068.96 and 8,402,421.92 is: 11,595,140.02
Step by Step Solution
- Step 1: Write the proportion equation
15,372,057.20 : 21,213,068.96 = 8,402,421.92 : x - Step 2: Convert to fraction form
15,372,057.20/21,213,068.96 = 8,402,421.92/x - Step 3: Cross multiply
15,372,057.20x = 21,213,068.96 × 8,402,421.92 - Step 4: Simplify right side
15,372,057.20x = 178,241,155,619,975.59 - Step 5: Solve for x
x = 178,241,155,619,975.59/15,372,057.20 - Step 6: Final answer
x = 11,595,140.02
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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.