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Finding the Fourth Proportional to 9,129.75, 13,717.71 and 8,760.69

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Solution

The fourth proportional to 9,129.75, 13,717.71 and 8,760.69 is: 13,163.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.75 : 13,717.71 = 8,760.69 : x
  2. Step 2: Convert to fraction form
    9,129.75/13,717.71 = 8,760.69/x
  3. Step 3: Cross multiply
    9,129.75x = 13,717.71 × 8,760.69
  4. Step 4: Simplify right side
    9,129.75x = 120,176,604.82
  5. Step 5: Solve for x
    x = 120,176,604.82/9,129.75
  6. Step 6: Final answer
    x = 13,163.19

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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.