Home / 12,179.11-18,269.20-3,859.74

Finding the Fourth Proportional to 12,179.11, 18,269.20 and 3,859.74

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Solution

The fourth proportional to 12,179.11, 18,269.20 and 3,859.74 is: 5,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.11 : 18,269.20 = 3,859.74 : x
  2. Step 2: Convert to fraction form
    12,179.11/18,269.20 = 3,859.74/x
  3. Step 3: Cross multiply
    12,179.11x = 18,269.20 × 3,859.74
  4. Step 4: Simplify right side
    12,179.11x = 70,514,319.43
  5. Step 5: Solve for x
    x = 70,514,319.43/12,179.11
  6. Step 6: Final answer
    x = 5,789.78

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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.