Home / 20,449.20-30,657.60-8,752.80

Finding the Fourth Proportional to 20,449.20, 30,657.60 and 8,752.80

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Solution

The fourth proportional to 20,449.20, 30,657.60 and 8,752.80 is: 13,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.20 : 30,657.60 = 8,752.80 : x
  2. Step 2: Convert to fraction form
    20,449.20/30,657.60 = 8,752.80/x
  3. Step 3: Cross multiply
    20,449.20x = 30,657.60 × 8,752.80
  4. Step 4: Simplify right side
    20,449.20x = 268,339,841.28
  5. Step 5: Solve for x
    x = 268,339,841.28/20,449.20
  6. Step 6: Final answer
    x = 13,122.27

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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.