Home / 13,500.27-20,250.87-3,639.78

Finding the Fourth Proportional to 13,500.27, 20,250.87 and 3,639.78

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Solution

The fourth proportional to 13,500.27, 20,250.87 and 3,639.78 is: 5,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.27 : 20,250.87 = 3,639.78 : x
  2. Step 2: Convert to fraction form
    13,500.27/20,250.87 = 3,639.78/x
  3. Step 3: Cross multiply
    13,500.27x = 20,250.87 × 3,639.78
  4. Step 4: Simplify right side
    13,500.27x = 73,708,711.61
  5. Step 5: Solve for x
    x = 73,708,711.61/13,500.27
  6. Step 6: Final answer
    x = 5,459.80

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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.