Home / 18,431.60-25,453.72-11,729.84

Finding the Fourth Proportional to 18,431.60, 25,453.72 and 11,729.84

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Solution

The fourth proportional to 18,431.60, 25,453.72 and 11,729.84 is: 16,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.60 : 25,453.72 = 11,729.84 : x
  2. Step 2: Convert to fraction form
    18,431.60/25,453.72 = 11,729.84/x
  3. Step 3: Cross multiply
    18,431.60x = 25,453.72 × 11,729.84
  4. Step 4: Simplify right side
    18,431.60x = 298,568,063.00
  5. Step 5: Solve for x
    x = 298,568,063.00/18,431.60
  6. Step 6: Final answer
    x = 16,198.71

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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.