Home / 20,582.79-30,874.27-5,791.92

Finding the Fourth Proportional to 20,582.79, 30,874.27 and 5,791.92

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Solution

The fourth proportional to 20,582.79, 30,874.27 and 5,791.92 is: 8,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.79 : 30,874.27 = 5,791.92 : x
  2. Step 2: Convert to fraction form
    20,582.79/30,874.27 = 5,791.92/x
  3. Step 3: Cross multiply
    20,582.79x = 30,874.27 × 5,791.92
  4. Step 4: Simplify right side
    20,582.79x = 178,821,301.90
  5. Step 5: Solve for x
    x = 178,821,301.90/20,582.79
  6. Step 6: Final answer
    x = 8,687.90

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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.