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Finding the Third Proportional to 10,040 and 15,520

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Solution

The third proportional to 10,040 and 15,520 is: 23,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,040 : 15,520 = 15,520 : x
  2. Step 2: Convert to fraction form
    10,040/15,520 = 15,520/x
  3. Step 3: Cross multiply
    10,040x = 15,520 × 15,520
  4. Step 4: Simplify right side
    10,040x = 240,870,400
  5. Step 5: Solve for x
    x = 240,870,400/10,040
  6. Step 6: Final answer
    x = 23,991.08

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.