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Finding the Third Proportional to 15,391.88 and 33,138

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Solution

The third proportional to 15,391.88 and 33,138 is: 71,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.88 : 33,138 = 33,138 : x
  2. Step 2: Convert to fraction form
    15,391.88/33,138 = 33,138/x
  3. Step 3: Cross multiply
    15,391.88x = 33,138 × 33,138
  4. Step 4: Simplify right side
    15,391.88x = 1,098,127,044
  5. Step 5: Solve for x
    x = 1,098,127,044/15,391.88
  6. Step 6: Final answer
    x = 71,344.59

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.