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Finding the Third Proportional to 8,109 and 17,691

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Solution

The third proportional to 8,109 and 17,691 is: 38,595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109 : 17,691 = 17,691 : x
  2. Step 2: Convert to fraction form
    8,109/17,691 = 17,691/x
  3. Step 3: Cross multiply
    8,109x = 17,691 × 17,691
  4. Step 4: Simplify right side
    8,109x = 312,971,481
  5. Step 5: Solve for x
    x = 312,971,481/8,109
  6. Step 6: Final answer
    x = 38,595.57

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.