Home / 10,821.12-16,231.68-3,029.88

Finding the Fourth Proportional to 10,821.12, 16,231.68 and 3,029.88

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Solution

The fourth proportional to 10,821.12, 16,231.68 and 3,029.88 is: 4,544.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.12 : 16,231.68 = 3,029.88 : x
  2. Step 2: Convert to fraction form
    10,821.12/16,231.68 = 3,029.88/x
  3. Step 3: Cross multiply
    10,821.12x = 16,231.68 × 3,029.88
  4. Step 4: Simplify right side
    10,821.12x = 49,180,042.60
  5. Step 5: Solve for x
    x = 49,180,042.60/10,821.12
  6. Step 6: Final answer
    x = 4,544.82

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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.