Home / 10,821.18-16,234.64-3,425.76

Finding the Fourth Proportional to 10,821.18, 16,234.64 and 3,425.76

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Solution

The fourth proportional to 10,821.18, 16,234.64 and 3,425.76 is: 5,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.18 : 16,234.64 = 3,425.76 : x
  2. Step 2: Convert to fraction form
    10,821.18/16,234.64 = 3,425.76/x
  3. Step 3: Cross multiply
    10,821.18x = 16,234.64 × 3,425.76
  4. Step 4: Simplify right side
    10,821.18x = 55,615,963.20
  5. Step 5: Solve for x
    x = 55,615,963.20/10,821.18
  6. Step 6: Final answer
    x = 5,139.55

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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.