Home / 18,704.62-25,789.03-11,979.19

Finding the Fourth Proportional to 18,704.62, 25,789.03 and 11,979.19

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Solution

The fourth proportional to 18,704.62, 25,789.03 and 11,979.19 is: 16,516.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.62 : 25,789.03 = 11,979.19 : x
  2. Step 2: Convert to fraction form
    18,704.62/25,789.03 = 11,979.19/x
  3. Step 3: Cross multiply
    18,704.62x = 25,789.03 × 11,979.19
  4. Step 4: Simplify right side
    18,704.62x = 308,931,759.96
  5. Step 5: Solve for x
    x = 308,931,759.96/18,704.62
  6. Step 6: Final answer
    x = 16,516.33

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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.