Finding the Fourth Proportional to 20,757,697.68, 31,139,518.08 and 6,381,972.53
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Solution
The fourth proportional to 20,757,697.68, 31,139,518.08 and 6,381,972.53 is: 9,573,872.40
Step by Step Solution
- Step 1: Write the proportion equation
20,757,697.68 : 31,139,518.08 = 6,381,972.53 : x - Step 2: Convert to fraction form
20,757,697.68/31,139,518.08 = 6,381,972.53/x - Step 3: Cross multiply
20,757,697.68x = 31,139,518.08 × 6,381,972.53 - Step 4: Simplify right side
20,757,697.68x = 198,731,548,933,107.72 - Step 5: Solve for x
x = 198,731,548,933,107.72/20,757,697.68 - Step 6: Final answer
x = 9,573,872.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.