Home / 20,255.52-30,387.36-8,568.72

Finding the Fourth Proportional to 20,255.52, 30,387.36 and 8,568.72

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Solution

The fourth proportional to 20,255.52, 30,387.36 and 8,568.72 is: 12,854.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.52 : 30,387.36 = 8,568.72 : x
  2. Step 2: Convert to fraction form
    20,255.52/30,387.36 = 8,568.72/x
  3. Step 3: Cross multiply
    20,255.52x = 30,387.36 × 8,568.72
  4. Step 4: Simplify right side
    20,255.52x = 260,380,779.38
  5. Step 5: Solve for x
    x = 260,380,779.38/20,255.52
  6. Step 6: Final answer
    x = 12,854.81

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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.