Home / 10,951.39-15,119.75-8,691.96

Finding the Fourth Proportional to 10,951.39, 15,119.75 and 8,691.96

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Solution

The fourth proportional to 10,951.39, 15,119.75 and 8,691.96 is: 12,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.39 : 15,119.75 = 8,691.96 : x
  2. Step 2: Convert to fraction form
    10,951.39/15,119.75 = 8,691.96/x
  3. Step 3: Cross multiply
    10,951.39x = 15,119.75 × 8,691.96
  4. Step 4: Simplify right side
    10,951.39x = 131,420,283.94
  5. Step 5: Solve for x
    x = 131,420,283.94/10,951.39
  6. Step 6: Final answer
    x = 12,000.33

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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.