Home / 20,311.16-30,467.36-5,520.39

Finding the Fourth Proportional to 20,311.16, 30,467.36 and 5,520.39

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Solution

The fourth proportional to 20,311.16, 30,467.36 and 5,520.39 is: 8,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.16 : 30,467.36 = 5,520.39 : x
  2. Step 2: Convert to fraction form
    20,311.16/30,467.36 = 5,520.39/x
  3. Step 3: Cross multiply
    20,311.16x = 30,467.36 × 5,520.39
  4. Step 4: Simplify right side
    20,311.16x = 168,191,567.62
  5. Step 5: Solve for x
    x = 168,191,567.62/20,311.16
  6. Step 6: Final answer
    x = 8,280.75

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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.