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Finding the Third Proportional to 7,147.50 and 13,755

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Solution

The third proportional to 7,147.50 and 13,755 is: 26,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.50 : 13,755 = 13,755 : x
  2. Step 2: Convert to fraction form
    7,147.50/13,755 = 13,755/x
  3. Step 3: Cross multiply
    7,147.50x = 13,755 × 13,755
  4. Step 4: Simplify right side
    7,147.50x = 189,200,025
  5. Step 5: Solve for x
    x = 189,200,025/7,147.50
  6. Step 6: Final answer
    x = 26,470.80

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.