Home / 8,960.11-12,336.71-8,129.73

Finding the Fourth Proportional to 8,960.11, 12,336.71 and 8,129.73

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Solution

The fourth proportional to 8,960.11, 12,336.71 and 8,129.73 is: 11,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.11 : 12,336.71 = 8,129.73 : x
  2. Step 2: Convert to fraction form
    8,960.11/12,336.71 = 8,129.73/x
  3. Step 3: Cross multiply
    8,960.11x = 12,336.71 × 8,129.73
  4. Step 4: Simplify right side
    8,960.11x = 100,294,034.48
  5. Step 5: Solve for x
    x = 100,294,034.48/8,960.11
  6. Step 6: Final answer
    x = 11,193.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.