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Finding the Third Proportional to 15,691 and 33,656

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Solution

The third proportional to 15,691 and 33,656 is: 72,189.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691 : 33,656 = 33,656 : x
  2. Step 2: Convert to fraction form
    15,691/33,656 = 33,656/x
  3. Step 3: Cross multiply
    15,691x = 33,656 × 33,656
  4. Step 4: Simplify right side
    15,691x = 1,132,726,336
  5. Step 5: Solve for x
    x = 1,132,726,336/15,691
  6. Step 6: Final answer
    x = 72,189.56

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.