Home / 20,691.23-31,025.50-8,198.60

Finding the Fourth Proportional to 20,691.23, 31,025.50 and 8,198.60

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Solution

The fourth proportional to 20,691.23, 31,025.50 and 8,198.60 is: 12,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.23 : 31,025.50 = 8,198.60 : x
  2. Step 2: Convert to fraction form
    20,691.23/31,025.50 = 8,198.60/x
  3. Step 3: Cross multiply
    20,691.23x = 31,025.50 × 8,198.60
  4. Step 4: Simplify right side
    20,691.23x = 254,365,488.68
  5. Step 5: Solve for x
    x = 254,365,488.68/20,691.23
  6. Step 6: Final answer
    x = 12,293.40

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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.