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Finding the Third Proportional to 9,938 and 15,879

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Solution

The third proportional to 9,938 and 15,879 is: 25,371.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938 : 15,879 = 15,879 : x
  2. Step 2: Convert to fraction form
    9,938/15,879 = 15,879/x
  3. Step 3: Cross multiply
    9,938x = 15,879 × 15,879
  4. Step 4: Simplify right side
    9,938x = 252,142,641
  5. Step 5: Solve for x
    x = 252,142,641/9,938
  6. Step 6: Final answer
    x = 25,371.57

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.