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Finding the Fourth Proportional to 11,863.72, 17,806.36 and 6,321.80

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Solution

The fourth proportional to 11,863.72, 17,806.36 and 6,321.80 is: 9,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,863.72 : 17,806.36 = 6,321.80 : x
  2. Step 2: Convert to fraction form
    11,863.72/17,806.36 = 6,321.80/x
  3. Step 3: Cross multiply
    11,863.72x = 17,806.36 × 6,321.80
  4. Step 4: Simplify right side
    11,863.72x = 112,568,246.65
  5. Step 5: Solve for x
    x = 112,568,246.65/11,863.72
  6. Step 6: Final answer
    x = 9,488.44

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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.