Home / 28,793.28-39,751.92-20,827.20

Finding the Fourth Proportional to 28,793.28, 39,751.92 and 20,827.20

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Solution

The fourth proportional to 28,793.28, 39,751.92 and 20,827.20 is: 28,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.28 : 39,751.92 = 20,827.20 : x
  2. Step 2: Convert to fraction form
    28,793.28/39,751.92 = 20,827.20/x
  3. Step 3: Cross multiply
    28,793.28x = 39,751.92 × 20,827.20
  4. Step 4: Simplify right side
    28,793.28x = 827,921,188.22
  5. Step 5: Solve for x
    x = 827,921,188.22/28,793.28
  6. Step 6: Final answer
    x = 28,753.97

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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.