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Finding the Third Proportional to 15,531 and 33,521

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Solution

The third proportional to 15,531 and 33,521 is: 72,349.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531 : 33,521 = 33,521 : x
  2. Step 2: Convert to fraction form
    15,531/33,521 = 33,521/x
  3. Step 3: Cross multiply
    15,531x = 33,521 × 33,521
  4. Step 4: Simplify right side
    15,531x = 1,123,657,441
  5. Step 5: Solve for x
    x = 1,123,657,441/15,531
  6. Step 6: Final answer
    x = 72,349.33

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.