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Finding the Fourth Proportional to 9,169.11, 13,772.07 and 8,910.72

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Solution

The fourth proportional to 9,169.11, 13,772.07 and 8,910.72 is: 13,383.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,169.11 : 13,772.07 = 8,910.72 : x
  2. Step 2: Convert to fraction form
    9,169.11/13,772.07 = 8,910.72/x
  3. Step 3: Cross multiply
    9,169.11x = 13,772.07 × 8,910.72
  4. Step 4: Simplify right side
    9,169.11x = 122,719,059.59
  5. Step 5: Solve for x
    x = 122,719,059.59/9,169.11
  6. Step 6: Final answer
    x = 13,383.97

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1.5x scale

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.