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Finding the Third Proportional to 10,272 and 11,872

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Solution

The third proportional to 10,272 and 11,872 is: 13,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,272 : 11,872 = 11,872 : x
  2. Step 2: Convert to fraction form
    10,272/11,872 = 11,872/x
  3. Step 3: Cross multiply
    10,272x = 11,872 × 11,872
  4. Step 4: Simplify right side
    10,272x = 140,944,384
  5. Step 5: Solve for x
    x = 140,944,384/10,272
  6. Step 6: Final answer
    x = 13,721.22

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.