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Finding the Fourth Proportional to 8,981,371.80, 13,472,057.70 and 7,989,348.60

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Solution

The fourth proportional to 8,981,371.80, 13,472,057.70 and 7,989,348.60 is: 11,984,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981,371.80 : 13,472,057.70 = 7,989,348.60 : x
  2. Step 2: Convert to fraction form
    8,981,371.80/13,472,057.70 = 7,989,348.60/x
  3. Step 3: Cross multiply
    8,981,371.80x = 13,472,057.70 × 7,989,348.60
  4. Step 4: Simplify right side
    8,981,371.80x = 107,632,965,324,614.20
  5. Step 5: Solve for x
    x = 107,632,965,324,614.20/8,981,371.80
  6. Step 6: Final answer
    x = 11,984,022.90

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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.