Home / 12,183.28-18,276.83-5,163.31

Finding the Fourth Proportional to 12,183.28, 18,276.83 and 5,163.31

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Solution

The fourth proportional to 12,183.28, 18,276.83 and 5,163.31 is: 7,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.28 : 18,276.83 = 5,163.31 : x
  2. Step 2: Convert to fraction form
    12,183.28/18,276.83 = 5,163.31/x
  3. Step 3: Cross multiply
    12,183.28x = 18,276.83 × 5,163.31
  4. Step 4: Simplify right side
    12,183.28x = 94,368,939.11
  5. Step 5: Solve for x
    x = 94,368,939.11/12,183.28
  6. Step 6: Final answer
    x = 7,745.77

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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.