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Finding the Fourth Proportional to 15,874.43, 21,906.56 and 8,800.70

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Solution

The fourth proportional to 15,874.43, 21,906.56 and 8,800.70 is: 12,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.43 : 21,906.56 = 8,800.70 : x
  2. Step 2: Convert to fraction form
    15,874.43/21,906.56 = 8,800.70/x
  3. Step 3: Cross multiply
    15,874.43x = 21,906.56 × 8,800.70
  4. Step 4: Simplify right side
    15,874.43x = 192,792,909.06
  5. Step 5: Solve for x
    x = 192,792,909.06/15,874.43
  6. Step 6: Final answer
    x = 12,144.88

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1.5x scale

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.