Home / 20,123.20-30,183.45-5,331.80

Finding the Fourth Proportional to 20,123.20, 30,183.45 and 5,331.80

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Solution

The fourth proportional to 20,123.20, 30,183.45 and 5,331.80 is: 7,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.20 : 30,183.45 = 5,331.80 : x
  2. Step 2: Convert to fraction form
    20,123.20/30,183.45 = 5,331.80/x
  3. Step 3: Cross multiply
    20,123.20x = 30,183.45 × 5,331.80
  4. Step 4: Simplify right side
    20,123.20x = 160,932,118.71
  5. Step 5: Solve for x
    x = 160,932,118.71/20,123.20
  6. Step 6: Final answer
    x = 7,997.34

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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.