Home / 20,633.28-30,938.88-8,152.80

Finding the Fourth Proportional to 20,633.28, 30,938.88 and 8,152.80

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Solution

The fourth proportional to 20,633.28, 30,938.88 and 8,152.80 is: 12,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.28 : 30,938.88 = 8,152.80 : x
  2. Step 2: Convert to fraction form
    20,633.28/30,938.88 = 8,152.80/x
  3. Step 3: Cross multiply
    20,633.28x = 30,938.88 × 8,152.80
  4. Step 4: Simplify right side
    20,633.28x = 252,238,500.86
  5. Step 5: Solve for x
    x = 252,238,500.86/20,633.28
  6. Step 6: Final answer
    x = 12,224.84

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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.