Home / 20,404.35-28,163.84-13,234.11

Finding the Fourth Proportional to 20,404.35, 28,163.84 and 13,234.11

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Solution

The fourth proportional to 20,404.35, 28,163.84 and 13,234.11 is: 18,266.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.35 : 28,163.84 = 13,234.11 : x
  2. Step 2: Convert to fraction form
    20,404.35/28,163.84 = 13,234.11/x
  3. Step 3: Cross multiply
    20,404.35x = 28,163.84 × 13,234.11
  4. Step 4: Simplify right side
    20,404.35x = 372,723,290.41
  5. Step 5: Solve for x
    x = 372,723,290.41/20,404.35
  6. Step 6: Final answer
    x = 18,266.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.