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Finding the Third Proportional to 8,223.75 and 11,154.38

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Solution

The third proportional to 8,223.75 and 11,154.38 is: 15,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,223.75 : 11,154.38 = 11,154.38 : x
  2. Step 2: Convert to fraction form
    8,223.75/11,154.38 = 11,154.38/x
  3. Step 3: Cross multiply
    8,223.75x = 11,154.38 × 11,154.38
  4. Step 4: Simplify right side
    8,223.75x = 124,420,081.64
  5. Step 5: Solve for x
    x = 124,420,081.64/8,223.75
  6. Step 6: Final answer
    x = 15,129.36

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.