Home / 20,582.80-30,874.20-6,731.80

Finding the Fourth Proportional to 20,582.80, 30,874.20 and 6,731.80

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Solution

The fourth proportional to 20,582.80, 30,874.20 and 6,731.80 is: 10,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.80 : 30,874.20 = 6,731.80 : x
  2. Step 2: Convert to fraction form
    20,582.80/30,874.20 = 6,731.80/x
  3. Step 3: Cross multiply
    20,582.80x = 30,874.20 × 6,731.80
  4. Step 4: Simplify right side
    20,582.80x = 207,838,939.56
  5. Step 5: Solve for x
    x = 207,838,939.56/20,582.80
  6. Step 6: Final answer
    x = 10,097.70

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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.