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Finding the Fourth Proportional to 11,766.90, 17,679.15 and 8,850.90

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Solution

The fourth proportional to 11,766.90, 17,679.15 and 8,850.90 is: 13,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,766.90 : 17,679.15 = 8,850.90 : x
  2. Step 2: Convert to fraction form
    11,766.90/17,679.15 = 8,850.90/x
  3. Step 3: Cross multiply
    11,766.90x = 17,679.15 × 8,850.90
  4. Step 4: Simplify right side
    11,766.90x = 156,476,388.74
  5. Step 5: Solve for x
    x = 156,476,388.74/11,766.90
  6. Step 6: Final answer
    x = 13,298.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.