Home / 10,429.11-15,631.35-3,847.61

Finding the Fourth Proportional to 10,429.11, 15,631.35 and 3,847.61

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Solution

The fourth proportional to 10,429.11, 15,631.35 and 3,847.61 is: 5,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.11 : 15,631.35 = 3,847.61 : x
  2. Step 2: Convert to fraction form
    10,429.11/15,631.35 = 3,847.61/x
  3. Step 3: Cross multiply
    10,429.11x = 15,631.35 × 3,847.61
  4. Step 4: Simplify right side
    10,429.11x = 60,143,319.34
  5. Step 5: Solve for x
    x = 60,143,319.34/10,429.11
  6. Step 6: Final answer
    x = 5,766.87

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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.