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Finding the Fourth Proportional to 18,478.76, 27,716.60 and 7,234.25

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Solution

The fourth proportional to 18,478.76, 27,716.60 and 7,234.25 is: 10,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.76 : 27,716.60 = 7,234.25 : x
  2. Step 2: Convert to fraction form
    18,478.76/27,716.60 = 7,234.25/x
  3. Step 3: Cross multiply
    18,478.76x = 27,716.60 × 7,234.25
  4. Step 4: Simplify right side
    18,478.76x = 200,508,693.05
  5. Step 5: Solve for x
    x = 200,508,693.05/18,478.76
  6. Step 6: Final answer
    x = 10,850.77

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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.