Home / 28,375.20-42,520.68-18,982.98

Finding the Fourth Proportional to 28,375.20, 42,520.68 and 18,982.98

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Solution

The fourth proportional to 28,375.20, 42,520.68 and 18,982.98 is: 28,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.20 : 42,520.68 = 18,982.98 : x
  2. Step 2: Convert to fraction form
    28,375.20/42,520.68 = 18,982.98/x
  3. Step 3: Cross multiply
    28,375.20x = 42,520.68 × 18,982.98
  4. Step 4: Simplify right side
    28,375.20x = 807,169,218.03
  5. Step 5: Solve for x
    x = 807,169,218.03/28,375.20
  6. Step 6: Final answer
    x = 28,446.29

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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.