Home / 10,821.20-16,231.79-3,029.81

Finding the Fourth Proportional to 10,821.20, 16,231.79 and 3,029.81

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Solution

The fourth proportional to 10,821.20, 16,231.79 and 3,029.81 is: 4,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.20 : 16,231.79 = 3,029.81 : x
  2. Step 2: Convert to fraction form
    10,821.20/16,231.79 = 3,029.81/x
  3. Step 3: Cross multiply
    10,821.20x = 16,231.79 × 3,029.81
  4. Step 4: Simplify right side
    10,821.20x = 49,179,166.08
  5. Step 5: Solve for x
    x = 49,179,166.08/10,821.20
  6. Step 6: Final answer
    x = 4,544.71

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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.