Home / 20,311.48-30,467.84-5,520.71

Finding the Fourth Proportional to 20,311.48, 30,467.84 and 5,520.71

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Solution

The fourth proportional to 20,311.48, 30,467.84 and 5,520.71 is: 8,281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.48 : 30,467.84 = 5,520.71 : x
  2. Step 2: Convert to fraction form
    20,311.48/30,467.84 = 5,520.71/x
  3. Step 3: Cross multiply
    20,311.48x = 30,467.84 × 5,520.71
  4. Step 4: Simplify right side
    20,311.48x = 168,204,108.97
  5. Step 5: Solve for x
    x = 168,204,108.97/20,311.48
  6. Step 6: Final answer
    x = 8,281.23

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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.