Home / 12,163.23-18,240.39-5,921.37

Finding the Fourth Proportional to 12,163.23, 18,240.39 and 5,921.37

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Solution

The fourth proportional to 12,163.23, 18,240.39 and 5,921.37 is: 8,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.23 : 18,240.39 = 5,921.37 : x
  2. Step 2: Convert to fraction form
    12,163.23/18,240.39 = 5,921.37/x
  3. Step 3: Cross multiply
    12,163.23x = 18,240.39 × 5,921.37
  4. Step 4: Simplify right side
    12,163.23x = 108,008,098.13
  5. Step 5: Solve for x
    x = 108,008,098.13/12,163.23
  6. Step 6: Final answer
    x = 8,879.89

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1.5x scale

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.