Finding the Fourth Proportional to 8,690,931.78, 13,057,652.08 and 8,207,515.14
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Solution
The fourth proportional to 8,690,931.78, 13,057,652.08 and 8,207,515.14 is: 12,331,344.88
Step by Step Solution
- Step 1: Write the proportion equation
8,690,931.78 : 13,057,652.08 = 8,207,515.14 : x - Step 2: Convert to fraction form
8,690,931.78/13,057,652.08 = 8,207,515.14/x - Step 3: Cross multiply
8,690,931.78x = 13,057,652.08 × 8,207,515.14 - Step 4: Simplify right side
8,690,931.78x = 107,170,877,139,452.48 - Step 5: Solve for x
x = 107,170,877,139,452.48/8,690,931.78 - Step 6: Final answer
x = 12,331,344.88
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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.