Home / 11,979.29-17,971.33-3,660.49

Finding the Fourth Proportional to 11,979.29, 17,971.33 and 3,660.49

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Solution

The fourth proportional to 11,979.29, 17,971.33 and 3,660.49 is: 5,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.29 : 17,971.33 = 3,660.49 : x
  2. Step 2: Convert to fraction form
    11,979.29/17,971.33 = 3,660.49/x
  3. Step 3: Cross multiply
    11,979.29x = 17,971.33 × 3,660.49
  4. Step 4: Simplify right side
    11,979.29x = 65,783,899.08
  5. Step 5: Solve for x
    x = 65,783,899.08/11,979.29
  6. Step 6: Final answer
    x = 5,491.47

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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.