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Finding the Third Proportional to 7,118 and 15,530

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Solution

The third proportional to 7,118 and 15,530 is: 33,883.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118 : 15,530 = 15,530 : x
  2. Step 2: Convert to fraction form
    7,118/15,530 = 15,530/x
  3. Step 3: Cross multiply
    7,118x = 15,530 × 15,530
  4. Step 4: Simplify right side
    7,118x = 241,180,900
  5. Step 5: Solve for x
    x = 241,180,900/7,118
  6. Step 6: Final answer
    x = 33,883.24

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.