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Finding the Third Proportional to 20,515.50 and 25,668

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Solution

The third proportional to 20,515.50 and 25,668 is: 32,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.50 : 25,668 = 25,668 : x
  2. Step 2: Convert to fraction form
    20,515.50/25,668 = 25,668/x
  3. Step 3: Cross multiply
    20,515.50x = 25,668 × 25,668
  4. Step 4: Simplify right side
    20,515.50x = 658,846,224
  5. Step 5: Solve for x
    x = 658,846,224/20,515.50
  6. Step 6: Final answer
    x = 32,114.56

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Why These Related Problems?

These problems maintain the same ratio (1.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.