Home / 11,479.11-17,191.32-7,972.62

Finding the Fourth Proportional to 11,479.11, 17,191.32 and 7,972.62

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Solution

The fourth proportional to 11,479.11, 17,191.32 and 7,972.62 is: 11,939.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.11 : 17,191.32 = 7,972.62 : x
  2. Step 2: Convert to fraction form
    11,479.11/17,191.32 = 7,972.62/x
  3. Step 3: Cross multiply
    11,479.11x = 17,191.32 × 7,972.62
  4. Step 4: Simplify right side
    11,479.11x = 137,059,861.66
  5. Step 5: Solve for x
    x = 137,059,861.66/11,479.11
  6. Step 6: Final answer
    x = 11,939.94

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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.