Home / 12,183.57-18,275.72-3,418.49

Finding the Fourth Proportional to 12,183.57, 18,275.72 and 3,418.49

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Solution

The fourth proportional to 12,183.57, 18,275.72 and 3,418.49 is: 5,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.57 : 18,275.72 = 3,418.49 : x
  2. Step 2: Convert to fraction form
    12,183.57/18,275.72 = 3,418.49/x
  3. Step 3: Cross multiply
    12,183.57x = 18,275.72 × 3,418.49
  4. Step 4: Simplify right side
    12,183.57x = 62,475,257.59
  5. Step 5: Solve for x
    x = 62,475,257.59/12,183.57
  6. Step 6: Final answer
    x = 5,127.83

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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.