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Finding the Third Proportional to 12,042 and 15,873

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Solution

The third proportional to 12,042 and 15,873 is: 20,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042 : 15,873 = 15,873 : x
  2. Step 2: Convert to fraction form
    12,042/15,873 = 15,873/x
  3. Step 3: Cross multiply
    12,042x = 15,873 × 15,873
  4. Step 4: Simplify right side
    12,042x = 251,952,129
  5. Step 5: Solve for x
    x = 251,952,129/12,042
  6. Step 6: Final answer
    x = 20,922.78

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.