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Finding the Fourth Proportional to 18,321.96, 27,489.60 and 7,794.84

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Solution

The fourth proportional to 18,321.96, 27,489.60 and 7,794.84 is: 11,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.96 : 27,489.60 = 7,794.84 : x
  2. Step 2: Convert to fraction form
    18,321.96/27,489.60 = 7,794.84/x
  3. Step 3: Cross multiply
    18,321.96x = 27,489.60 × 7,794.84
  4. Step 4: Simplify right side
    18,321.96x = 214,277,033.66
  5. Step 5: Solve for x
    x = 214,277,033.66/18,321.96
  6. Step 6: Final answer
    x = 11,695.09

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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.