Home / 13,940.20-20,910.18-3,551.92

Finding the Fourth Proportional to 13,940.20, 20,910.18 and 3,551.92

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Solution

The fourth proportional to 13,940.20, 20,910.18 and 3,551.92 is: 5,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.20 : 20,910.18 = 3,551.92 : x
  2. Step 2: Convert to fraction form
    13,940.20/20,910.18 = 3,551.92/x
  3. Step 3: Cross multiply
    13,940.20x = 20,910.18 × 3,551.92
  4. Step 4: Simplify right side
    13,940.20x = 74,271,286.55
  5. Step 5: Solve for x
    x = 74,271,286.55/13,940.20
  6. Step 6: Final answer
    x = 5,327.85

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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.