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Finding the Third Proportional to 10,251 and 11,691

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Solution

The third proportional to 10,251 and 11,691 is: 13,333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,251 : 11,691 = 11,691 : x
  2. Step 2: Convert to fraction form
    10,251/11,691 = 11,691/x
  3. Step 3: Cross multiply
    10,251x = 11,691 × 11,691
  4. Step 4: Simplify right side
    10,251x = 136,679,481
  5. Step 5: Solve for x
    x = 136,679,481/10,251
  6. Step 6: Final answer
    x = 13,333.28

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.