Home / 10,519.17-15,778.45-3,123.61

Finding the Fourth Proportional to 10,519.17, 15,778.45 and 3,123.61

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Solution

The fourth proportional to 10,519.17, 15,778.45 and 3,123.61 is: 4,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.17 : 15,778.45 = 3,123.61 : x
  2. Step 2: Convert to fraction form
    10,519.17/15,778.45 = 3,123.61/x
  3. Step 3: Cross multiply
    10,519.17x = 15,778.45 × 3,123.61
  4. Step 4: Simplify right side
    10,519.17x = 49,285,759.85
  5. Step 5: Solve for x
    x = 49,285,759.85/10,519.17
  6. Step 6: Final answer
    x = 4,685.33

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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.