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Finding the Third Proportional to 8,661 and 20,432

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Solution

The third proportional to 8,661 and 20,432 is: 48,200.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661 : 20,432 = 20,432 : x
  2. Step 2: Convert to fraction form
    8,661/20,432 = 20,432/x
  3. Step 3: Cross multiply
    8,661x = 20,432 × 20,432
  4. Step 4: Simplify right side
    8,661x = 417,466,624
  5. Step 5: Solve for x
    x = 417,466,624/8,661
  6. Step 6: Final answer
    x = 48,200.74

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.