Home / 20,135.20-30,198.67-7,650.85

Finding the Fourth Proportional to 20,135.20, 30,198.67 and 7,650.85

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Solution

The fourth proportional to 20,135.20, 30,198.67 and 7,650.85 is: 11,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.20 : 30,198.67 = 7,650.85 : x
  2. Step 2: Convert to fraction form
    20,135.20/30,198.67 = 7,650.85/x
  3. Step 3: Cross multiply
    20,135.20x = 30,198.67 × 7,650.85
  4. Step 4: Simplify right side
    20,135.20x = 231,045,494.37
  5. Step 5: Solve for x
    x = 231,045,494.37/20,135.20
  6. Step 6: Final answer
    x = 11,474.71

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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.