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Finding the Fourth Proportional to 18,008.88, 27,008.73 and 7,481.99

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Solution

The fourth proportional to 18,008.88, 27,008.73 and 7,481.99 is: 11,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.88 : 27,008.73 = 7,481.99 : x
  2. Step 2: Convert to fraction form
    18,008.88/27,008.73 = 7,481.99/x
  3. Step 3: Cross multiply
    18,008.88x = 27,008.73 × 7,481.99
  4. Step 4: Simplify right side
    18,008.88x = 202,078,912.73
  5. Step 5: Solve for x
    x = 202,078,912.73/18,008.88
  6. Step 6: Final answer
    x = 11,221.07

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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.