Home / 11,479.85-17,219.78-7,761.95

Finding the Fourth Proportional to 11,479.85, 17,219.78 and 7,761.95

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Solution

The fourth proportional to 11,479.85, 17,219.78 and 7,761.95 is: 11,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.85 : 17,219.78 = 7,761.95 : x
  2. Step 2: Convert to fraction form
    11,479.85/17,219.78 = 7,761.95/x
  3. Step 3: Cross multiply
    11,479.85x = 17,219.78 × 7,761.95
  4. Step 4: Simplify right side
    11,479.85x = 133,659,032.56
  5. Step 5: Solve for x
    x = 133,659,032.56/11,479.85
  6. Step 6: Final answer
    x = 11,642.93

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Similar ratio
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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.