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Finding the Third Proportional to 15,890 and 36,942

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Solution

The third proportional to 15,890 and 36,942 is: 85,884.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890 : 36,942 = 36,942 : x
  2. Step 2: Convert to fraction form
    15,890/36,942 = 36,942/x
  3. Step 3: Cross multiply
    15,890x = 36,942 × 36,942
  4. Step 4: Simplify right side
    15,890x = 1,364,711,364
  5. Step 5: Solve for x
    x = 1,364,711,364/15,890
  6. Step 6: Final answer
    x = 85,884.92

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.