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Finding the Third Proportional to 15,382 and 20,529

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Solution

The third proportional to 15,382 and 20,529 is: 27,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382 : 20,529 = 20,529 : x
  2. Step 2: Convert to fraction form
    15,382/20,529 = 20,529/x
  3. Step 3: Cross multiply
    15,382x = 20,529 × 20,529
  4. Step 4: Simplify right side
    15,382x = 421,439,841
  5. Step 5: Solve for x
    x = 421,439,841/15,382
  6. Step 6: Final answer
    x = 27,398.25

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.