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Finding the Third Proportional to 12,372 and 18,418

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Solution

The third proportional to 12,372 and 18,418 is: 27,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372 : 18,418 = 18,418 : x
  2. Step 2: Convert to fraction form
    12,372/18,418 = 18,418/x
  3. Step 3: Cross multiply
    12,372x = 18,418 × 18,418
  4. Step 4: Simplify right side
    12,372x = 339,222,724
  5. Step 5: Solve for x
    x = 339,222,724/12,372
  6. Step 6: Final answer
    x = 27,418.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.