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Finding the Third Proportional to 11,469.75 and 15,115.50

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Solution

The third proportional to 11,469.75 and 15,115.50 is: 19,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,469.75 : 15,115.50 = 15,115.50 : x
  2. Step 2: Convert to fraction form
    11,469.75/15,115.50 = 15,115.50/x
  3. Step 3: Cross multiply
    11,469.75x = 15,115.50 × 15,115.50
  4. Step 4: Simplify right side
    11,469.75x = 228,478,340.25
  5. Step 5: Solve for x
    x = 228,478,340.25/11,469.75
  6. Step 6: Final answer
    x = 19,920.08

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.