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Finding the Third Proportional to 17,280 and 36,339

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Solution

The third proportional to 17,280 and 36,339 is: 76,419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,280 : 36,339 = 36,339 : x
  2. Step 2: Convert to fraction form
    17,280/36,339 = 36,339/x
  3. Step 3: Cross multiply
    17,280x = 36,339 × 36,339
  4. Step 4: Simplify right side
    17,280x = 1,320,522,921
  5. Step 5: Solve for x
    x = 1,320,522,921/17,280
  6. Step 6: Final answer
    x = 76,419.15

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.