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Finding the Fourth Proportional to 27,995.59, 41,979.72 and 12,213.96

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Solution

The fourth proportional to 27,995.59, 41,979.72 and 12,213.96 is: 18,314.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.59 : 41,979.72 = 12,213.96 : x
  2. Step 2: Convert to fraction form
    27,995.59/41,979.72 = 12,213.96/x
  3. Step 3: Cross multiply
    27,995.59x = 41,979.72 × 12,213.96
  4. Step 4: Simplify right side
    27,995.59x = 512,738,440.57
  5. Step 5: Solve for x
    x = 512,738,440.57/27,995.59
  6. Step 6: Final answer
    x = 18,314.97

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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.