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Finding the Third Proportional to 11,517 and 15,475.50

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Solution

The third proportional to 11,517 and 15,475.50 is: 20,794.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517 : 15,475.50 = 15,475.50 : x
  2. Step 2: Convert to fraction form
    11,517/15,475.50 = 15,475.50/x
  3. Step 3: Cross multiply
    11,517x = 15,475.50 × 15,475.50
  4. Step 4: Simplify right side
    11,517x = 239,491,100.25
  5. Step 5: Solve for x
    x = 239,491,100.25/11,517
  6. Step 6: Final answer
    x = 20,794.57

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.