Home / 12,425.75-18,651.27-5,408.90

Finding the Fourth Proportional to 12,425.75, 18,651.27 and 5,408.90

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Solution

The fourth proportional to 12,425.75, 18,651.27 and 5,408.90 is: 8,118.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.75 : 18,651.27 = 5,408.90 : x
  2. Step 2: Convert to fraction form
    12,425.75/18,651.27 = 5,408.90/x
  3. Step 3: Cross multiply
    12,425.75x = 18,651.27 × 5,408.90
  4. Step 4: Simplify right side
    12,425.75x = 100,882,761.05
  5. Step 5: Solve for x
    x = 100,882,761.05/12,425.75
  6. Step 6: Final answer
    x = 8,118.85

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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.