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Finding the Fourth Proportional to 18,268.92, 27,406.24 and 7,738.97

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Solution

The fourth proportional to 18,268.92, 27,406.24 and 7,738.97 is: 11,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.92 : 27,406.24 = 7,738.97 : x
  2. Step 2: Convert to fraction form
    18,268.92/27,406.24 = 7,738.97/x
  3. Step 3: Cross multiply
    18,268.92x = 27,406.24 × 7,738.97
  4. Step 4: Simplify right side
    18,268.92x = 212,095,912.79
  5. Step 5: Solve for x
    x = 212,095,912.79/18,268.92
  6. Step 6: Final answer
    x = 11,609.66

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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.