Home / 20,517.18-30,775.86-5,727.12

Finding the Fourth Proportional to 20,517.18, 30,775.86 and 5,727.12

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Solution

The fourth proportional to 20,517.18, 30,775.86 and 5,727.12 is: 8,590.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.18 : 30,775.86 = 5,727.12 : x
  2. Step 2: Convert to fraction form
    20,517.18/30,775.86 = 5,727.12/x
  3. Step 3: Cross multiply
    20,517.18x = 30,775.86 × 5,727.12
  4. Step 4: Simplify right side
    20,517.18x = 176,257,043.32
  5. Step 5: Solve for x
    x = 176,257,043.32/20,517.18
  6. Step 6: Final answer
    x = 8,590.71

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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.