Home / 20,286.20-30,413.10-8,589.80

Finding the Fourth Proportional to 20,286.20, 30,413.10 and 8,589.80

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Solution

The fourth proportional to 20,286.20, 30,413.10 and 8,589.80 is: 12,877.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.20 : 30,413.10 = 8,589.80 : x
  2. Step 2: Convert to fraction form
    20,286.20/30,413.10 = 8,589.80/x
  3. Step 3: Cross multiply
    20,286.20x = 30,413.10 × 8,589.80
  4. Step 4: Simplify right side
    20,286.20x = 261,242,446.38
  5. Step 5: Solve for x
    x = 261,242,446.38/20,286.20
  6. Step 6: Final answer
    x = 12,877.84

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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.