Home / 13,385.90-20,067.56-8,444.65

Finding the Fourth Proportional to 13,385.90, 20,067.56 and 8,444.65

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Solution

The fourth proportional to 13,385.90, 20,067.56 and 8,444.65 is: 12,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.90 : 20,067.56 = 8,444.65 : x
  2. Step 2: Convert to fraction form
    13,385.90/20,067.56 = 8,444.65/x
  3. Step 3: Cross multiply
    13,385.90x = 20,067.56 × 8,444.65
  4. Step 4: Simplify right side
    13,385.90x = 169,463,520.55
  5. Step 5: Solve for x
    x = 169,463,520.55/13,385.90
  6. Step 6: Final answer
    x = 12,659.85

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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.