Home / 20,877.30-28,793.92-18,354.04

Finding the Fourth Proportional to 20,877.30, 28,793.92 and 18,354.04

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Solution

The fourth proportional to 20,877.30, 28,793.92 and 18,354.04 is: 25,313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.30 : 28,793.92 = 18,354.04 : x
  2. Step 2: Convert to fraction form
    20,877.30/28,793.92 = 18,354.04/x
  3. Step 3: Cross multiply
    20,877.30x = 28,793.92 × 18,354.04
  4. Step 4: Simplify right side
    20,877.30x = 528,484,759.44
  5. Step 5: Solve for x
    x = 528,484,759.44/20,877.30
  6. Step 6: Final answer
    x = 25,313.85

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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.