Home / 18,704.76-25,789.23-11,979.33

Finding the Fourth Proportional to 18,704.76, 25,789.23 and 11,979.33

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Solution

The fourth proportional to 18,704.76, 25,789.23 and 11,979.33 is: 16,516.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.76 : 25,789.23 = 11,979.33 : x
  2. Step 2: Convert to fraction form
    18,704.76/25,789.23 = 11,979.33/x
  3. Step 3: Cross multiply
    18,704.76x = 25,789.23 × 11,979.33
  4. Step 4: Simplify right side
    18,704.76x = 308,937,696.62
  5. Step 5: Solve for x
    x = 308,937,696.62/18,704.76
  6. Step 6: Final answer
    x = 16,516.53

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Double scale
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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.