Home / 13,499.59-20,249.40-3,639.85

Finding the Fourth Proportional to 13,499.59, 20,249.40 and 3,639.85

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Solution

The fourth proportional to 13,499.59, 20,249.40 and 3,639.85 is: 5,459.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.59 : 20,249.40 = 3,639.85 : x
  2. Step 2: Convert to fraction form
    13,499.59/20,249.40 = 3,639.85/x
  3. Step 3: Cross multiply
    13,499.59x = 20,249.40 × 3,639.85
  4. Step 4: Simplify right side
    13,499.59x = 73,704,778.59
  5. Step 5: Solve for x
    x = 73,704,778.59/13,499.59
  6. Step 6: Final answer
    x = 5,459.78

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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.