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Finding the Third Proportional to 15,382 and 17,812

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Solution

The third proportional to 15,382 and 17,812 is: 20,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382 : 17,812 = 17,812 : x
  2. Step 2: Convert to fraction form
    15,382/17,812 = 17,812/x
  3. Step 3: Cross multiply
    15,382x = 17,812 × 17,812
  4. Step 4: Simplify right side
    15,382x = 317,267,344
  5. Step 5: Solve for x
    x = 317,267,344/15,382
  6. Step 6: Final answer
    x = 20,625.88

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.