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Finding the Third Proportional to 17,792 and 27,909

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Solution

The third proportional to 17,792 and 27,909 is: 43,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,792 : 27,909 = 27,909 : x
  2. Step 2: Convert to fraction form
    17,792/27,909 = 27,909/x
  3. Step 3: Cross multiply
    17,792x = 27,909 × 27,909
  4. Step 4: Simplify right side
    17,792x = 778,912,281
  5. Step 5: Solve for x
    x = 778,912,281/17,792
  6. Step 6: Final answer
    x = 43,778.79

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.