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Finding the Third Proportional to 11,180 and 15,730

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Solution

The third proportional to 11,180 and 15,730 is: 22,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180 : 15,730 = 15,730 : x
  2. Step 2: Convert to fraction form
    11,180/15,730 = 15,730/x
  3. Step 3: Cross multiply
    11,180x = 15,730 × 15,730
  4. Step 4: Simplify right side
    11,180x = 247,432,900
  5. Step 5: Solve for x
    x = 247,432,900/11,180
  6. Step 6: Final answer
    x = 22,131.74

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.