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Finding the Third Proportional to 15,192 and 16,872

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Solution

The third proportional to 15,192 and 16,872 is: 18,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,192 : 16,872 = 16,872 : x
  2. Step 2: Convert to fraction form
    15,192/16,872 = 16,872/x
  3. Step 3: Cross multiply
    15,192x = 16,872 × 16,872
  4. Step 4: Simplify right side
    15,192x = 284,664,384
  5. Step 5: Solve for x
    x = 284,664,384/15,192
  6. Step 6: Final answer
    x = 18,737.78

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.