Home / 20,288.60-30,432.90-5,499.35

Finding the Fourth Proportional to 20,288.60, 30,432.90 and 5,499.35

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Solution

The fourth proportional to 20,288.60, 30,432.90 and 5,499.35 is: 8,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.60 : 30,432.90 = 5,499.35 : x
  2. Step 2: Convert to fraction form
    20,288.60/30,432.90 = 5,499.35/x
  3. Step 3: Cross multiply
    20,288.60x = 30,432.90 × 5,499.35
  4. Step 4: Simplify right side
    20,288.60x = 167,361,168.62
  5. Step 5: Solve for x
    x = 167,361,168.62/20,288.60
  6. Step 6: Final answer
    x = 8,249.03

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Similar ratio
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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.