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Finding the Third Proportional to 18,447 and 27,689

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Solution

The third proportional to 18,447 and 27,689 is: 41,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447 : 27,689 = 27,689 : x
  2. Step 2: Convert to fraction form
    18,447/27,689 = 27,689/x
  3. Step 3: Cross multiply
    18,447x = 27,689 × 27,689
  4. Step 4: Simplify right side
    18,447x = 766,680,721
  5. Step 5: Solve for x
    x = 766,680,721/18,447
  6. Step 6: Final answer
    x = 41,561.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.