Home / 20,272.20-30,410.22-8,423.48

Finding the Fourth Proportional to 20,272.20, 30,410.22 and 8,423.48

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Solution

The fourth proportional to 20,272.20, 30,410.22 and 8,423.48 is: 12,636.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.20 : 30,410.22 = 8,423.48 : x
  2. Step 2: Convert to fraction form
    20,272.20/30,410.22 = 8,423.48/x
  3. Step 3: Cross multiply
    20,272.20x = 30,410.22 × 8,423.48
  4. Step 4: Simplify right side
    20,272.20x = 256,159,879.97
  5. Step 5: Solve for x
    x = 256,159,879.97/20,272.20
  6. Step 6: Final answer
    x = 12,636.02

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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.