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Finding the Fourth Proportional to 18,631.50, 27,951.03 and 8,243.25

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Solution

The fourth proportional to 18,631.50, 27,951.03 and 8,243.25 is: 12,366.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.50 : 27,951.03 = 8,243.25 : x
  2. Step 2: Convert to fraction form
    18,631.50/27,951.03 = 8,243.25/x
  3. Step 3: Cross multiply
    18,631.50x = 27,951.03 × 8,243.25
  4. Step 4: Simplify right side
    18,631.50x = 230,407,328.05
  5. Step 5: Solve for x
    x = 230,407,328.05/18,631.50
  6. Step 6: Final answer
    x = 12,366.55

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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.