Home / 18,163.50-25,067.79-11,889.78

Finding the Fourth Proportional to 18,163.50, 25,067.79 and 11,889.78

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Solution

The fourth proportional to 18,163.50, 25,067.79 and 11,889.78 is: 16,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.50 : 25,067.79 = 11,889.78 : x
  2. Step 2: Convert to fraction form
    18,163.50/25,067.79 = 11,889.78/x
  3. Step 3: Cross multiply
    18,163.50x = 25,067.79 × 11,889.78
  4. Step 4: Simplify right side
    18,163.50x = 298,050,508.19
  5. Step 5: Solve for x
    x = 298,050,508.19/18,163.50
  6. Step 6: Final answer
    x = 16,409.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.