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Finding the Third Proportional to 15,414 and 21,441

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Solution

The third proportional to 15,414 and 21,441 is: 29,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414 : 21,441 = 21,441 : x
  2. Step 2: Convert to fraction form
    15,414/21,441 = 21,441/x
  3. Step 3: Cross multiply
    15,414x = 21,441 × 21,441
  4. Step 4: Simplify right side
    15,414x = 459,716,481
  5. Step 5: Solve for x
    x = 459,716,481/15,414
  6. Step 6: Final answer
    x = 29,824.61

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.