Home / 28,108.80-38,793.60-18,043.20

Finding the Fourth Proportional to 28,108.80, 38,793.60 and 18,043.20

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Solution

The fourth proportional to 28,108.80, 38,793.60 and 18,043.20 is: 24,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.80 : 38,793.60 = 18,043.20 : x
  2. Step 2: Convert to fraction form
    28,108.80/38,793.60 = 18,043.20/x
  3. Step 3: Cross multiply
    28,108.80x = 38,793.60 × 18,043.20
  4. Step 4: Simplify right side
    28,108.80x = 699,960,683.52
  5. Step 5: Solve for x
    x = 699,960,683.52/28,108.80
  6. Step 6: Final answer
    x = 24,901.83

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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.