Home / 13,591.20-20,385.88-3,729.65

Finding the Fourth Proportional to 13,591.20, 20,385.88 and 3,729.65

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Solution

The fourth proportional to 13,591.20, 20,385.88 and 3,729.65 is: 5,594.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.20 : 20,385.88 = 3,729.65 : x
  2. Step 2: Convert to fraction form
    13,591.20/20,385.88 = 3,729.65/x
  3. Step 3: Cross multiply
    13,591.20x = 20,385.88 × 3,729.65
  4. Step 4: Simplify right side
    13,591.20x = 76,032,076.76
  5. Step 5: Solve for x
    x = 76,032,076.76/13,591.20
  6. Step 6: Final answer
    x = 5,594.22

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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.