Home / 20,582.20-30,874.65-5,791.60

Finding the Fourth Proportional to 20,582.20, 30,874.65 and 5,791.60

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Solution

The fourth proportional to 20,582.20, 30,874.65 and 5,791.60 is: 8,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.20 : 30,874.65 = 5,791.60 : x
  2. Step 2: Convert to fraction form
    20,582.20/30,874.65 = 5,791.60/x
  3. Step 3: Cross multiply
    20,582.20x = 30,874.65 × 5,791.60
  4. Step 4: Simplify right side
    20,582.20x = 178,813,622.94
  5. Step 5: Solve for x
    x = 178,813,622.94/20,582.20
  6. Step 6: Final answer
    x = 8,687.78

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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.