Home / 38,613.20-57,920.88-13,649.72

Finding the Fourth Proportional to 38,613.20, 57,920.88 and 13,649.72

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Solution

The fourth proportional to 38,613.20, 57,920.88 and 13,649.72 is: 20,474.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,613.20 : 57,920.88 = 13,649.72 : x
  2. Step 2: Convert to fraction form
    38,613.20/57,920.88 = 13,649.72/x
  3. Step 3: Cross multiply
    38,613.20x = 57,920.88 × 13,649.72
  4. Step 4: Simplify right side
    38,613.20x = 790,603,794.15
  5. Step 5: Solve for x
    x = 790,603,794.15/38,613.20
  6. Step 6: Final answer
    x = 20,474.96

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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.