Home / 10,821.10-16,232.40-3,425.70

Finding the Fourth Proportional to 10,821.10, 16,232.40 and 3,425.70

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Solution

The fourth proportional to 10,821.10, 16,232.40 and 3,425.70 is: 5,138.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.10 : 16,232.40 = 3,425.70 : x
  2. Step 2: Convert to fraction form
    10,821.10/16,232.40 = 3,425.70/x
  3. Step 3: Cross multiply
    10,821.10x = 16,232.40 × 3,425.70
  4. Step 4: Simplify right side
    10,821.10x = 55,607,332.68
  5. Step 5: Solve for x
    x = 55,607,332.68/10,821.10
  6. Step 6: Final answer
    x = 5,138.79

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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.