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Finding the Third Proportional to 12,338 and 18,979

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Solution

The third proportional to 12,338 and 18,979 is: 29,194.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338 : 18,979 = 18,979 : x
  2. Step 2: Convert to fraction form
    12,338/18,979 = 18,979/x
  3. Step 3: Cross multiply
    12,338x = 18,979 × 18,979
  4. Step 4: Simplify right side
    12,338x = 360,202,441
  5. Step 5: Solve for x
    x = 360,202,441/12,338
  6. Step 6: Final answer
    x = 29,194.56

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.