Home / 20,863.14-28,793.22-11,912.02

Finding the Fourth Proportional to 20,863.14, 28,793.22 and 11,912.02

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Solution

The fourth proportional to 20,863.14, 28,793.22 and 11,912.02 is: 16,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.14 : 28,793.22 = 11,912.02 : x
  2. Step 2: Convert to fraction form
    20,863.14/28,793.22 = 11,912.02/x
  3. Step 3: Cross multiply
    20,863.14x = 28,793.22 × 11,912.02
  4. Step 4: Simplify right side
    20,863.14x = 342,985,412.50
  5. Step 5: Solve for x
    x = 342,985,412.50/20,863.14
  6. Step 6: Final answer
    x = 16,439.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.