Home / 20,589.20-30,898.20-8,910.80

Finding the Fourth Proportional to 20,589.20, 30,898.20 and 8,910.80

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Solution

The fourth proportional to 20,589.20, 30,898.20 and 8,910.80 is: 13,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.20 : 30,898.20 = 8,910.80 : x
  2. Step 2: Convert to fraction form
    20,589.20/30,898.20 = 8,910.80/x
  3. Step 3: Cross multiply
    20,589.20x = 30,898.20 × 8,910.80
  4. Step 4: Simplify right side
    20,589.20x = 275,327,680.56
  5. Step 5: Solve for x
    x = 275,327,680.56/20,589.20
  6. Step 6: Final answer
    x = 13,372.43

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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.