Home / 13,760.60-20,644.36-3,899.95

Finding the Fourth Proportional to 13,760.60, 20,644.36 and 3,899.95

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Solution

The fourth proportional to 13,760.60, 20,644.36 and 3,899.95 is: 5,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.60 : 20,644.36 = 3,899.95 : x
  2. Step 2: Convert to fraction form
    13,760.60/20,644.36 = 3,899.95/x
  3. Step 3: Cross multiply
    13,760.60x = 20,644.36 × 3,899.95
  4. Step 4: Simplify right side
    13,760.60x = 80,511,910.42
  5. Step 5: Solve for x
    x = 80,511,910.42/13,760.60
  6. Step 6: Final answer
    x = 5,850.90

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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.