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Finding the Third Proportional to 15,432 and 21,294

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Solution

The third proportional to 15,432 and 21,294 is: 29,382.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432 : 21,294 = 21,294 : x
  2. Step 2: Convert to fraction form
    15,432/21,294 = 21,294/x
  3. Step 3: Cross multiply
    15,432x = 21,294 × 21,294
  4. Step 4: Simplify right side
    15,432x = 453,434,436
  5. Step 5: Solve for x
    x = 453,434,436/15,432
  6. Step 6: Final answer
    x = 29,382.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.