Home / 11,979.09-17,968.64-3,658.66

Finding the Fourth Proportional to 11,979.09, 17,968.64 and 3,658.66

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Solution

The fourth proportional to 11,979.09, 17,968.64 and 3,658.66 is: 5,487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.09 : 17,968.64 = 3,658.66 : x
  2. Step 2: Convert to fraction form
    11,979.09/17,968.64 = 3,658.66/x
  3. Step 3: Cross multiply
    11,979.09x = 17,968.64 × 3,658.66
  4. Step 4: Simplify right side
    11,979.09x = 65,741,081.21
  5. Step 5: Solve for x
    x = 65,741,081.21/11,979.09
  6. Step 6: Final answer
    x = 5,487.99

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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.