Home / 20,620.78-30,932.90-6,582.81

Finding the Fourth Proportional to 20,620.78, 30,932.90 and 6,582.81

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Solution

The fourth proportional to 20,620.78, 30,932.90 and 6,582.81 is: 9,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.78 : 30,932.90 = 6,582.81 : x
  2. Step 2: Convert to fraction form
    20,620.78/30,932.90 = 6,582.81/x
  3. Step 3: Cross multiply
    20,620.78x = 30,932.90 × 6,582.81
  4. Step 4: Simplify right side
    20,620.78x = 203,625,419.91
  5. Step 5: Solve for x
    x = 203,625,419.91/20,620.78
  6. Step 6: Final answer
    x = 9,874.77

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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.