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Finding the Third Proportional to 15,390 and 33,372

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Solution

The third proportional to 15,390 and 33,372 is: 72,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390 : 33,372 = 33,372 : x
  2. Step 2: Convert to fraction form
    15,390/33,372 = 33,372/x
  3. Step 3: Cross multiply
    15,390x = 33,372 × 33,372
  4. Step 4: Simplify right side
    15,390x = 1,113,690,384
  5. Step 5: Solve for x
    x = 1,113,690,384/15,390
  6. Step 6: Final answer
    x = 72,364.55

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.