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Finding the Third Proportional to 18,578 and 25,987

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Solution

The third proportional to 18,578 and 25,987 is: 36,350.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578 : 25,987 = 25,987 : x
  2. Step 2: Convert to fraction form
    18,578/25,987 = 25,987/x
  3. Step 3: Cross multiply
    18,578x = 25,987 × 25,987
  4. Step 4: Simplify right side
    18,578x = 675,324,169
  5. Step 5: Solve for x
    x = 675,324,169/18,578
  6. Step 6: Final answer
    x = 36,350.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.