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Finding the Third Proportional to 7,946 and 13,242

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Solution

The third proportional to 7,946 and 13,242 is: 22,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946 : 13,242 = 13,242 : x
  2. Step 2: Convert to fraction form
    7,946/13,242 = 13,242/x
  3. Step 3: Cross multiply
    7,946x = 13,242 × 13,242
  4. Step 4: Simplify right side
    7,946x = 175,350,564
  5. Step 5: Solve for x
    x = 175,350,564/7,946
  6. Step 6: Final answer
    x = 22,067.78

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.