Home / 13,793.28-20,690.04-3,405.12

Finding the Fourth Proportional to 13,793.28, 20,690.04 and 3,405.12

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Solution

The fourth proportional to 13,793.28, 20,690.04 and 3,405.12 is: 5,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.28 : 20,690.04 = 3,405.12 : x
  2. Step 2: Convert to fraction form
    13,793.28/20,690.04 = 3,405.12/x
  3. Step 3: Cross multiply
    13,793.28x = 20,690.04 × 3,405.12
  4. Step 4: Simplify right side
    13,793.28x = 70,452,069.00
  5. Step 5: Solve for x
    x = 70,452,069.00/13,793.28
  6. Step 6: Final answer
    x = 5,107.71

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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.