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Finding the Third Proportional to 8,115 and 17,688

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Solution

The third proportional to 8,115 and 17,688 is: 38,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115 : 17,688 = 17,688 : x
  2. Step 2: Convert to fraction form
    8,115/17,688 = 17,688/x
  3. Step 3: Cross multiply
    8,115x = 17,688 × 17,688
  4. Step 4: Simplify right side
    8,115x = 312,865,344
  5. Step 5: Solve for x
    x = 312,865,344/8,115
  6. Step 6: Final answer
    x = 38,553.95

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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.