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Finding the Fourth Proportional to 18,517.59, 27,791.94 and 7,995.56

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Solution

The fourth proportional to 18,517.59, 27,791.94 and 7,995.56 is: 12,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.59 : 27,791.94 = 7,995.56 : x
  2. Step 2: Convert to fraction form
    18,517.59/27,791.94 = 7,995.56/x
  3. Step 3: Cross multiply
    18,517.59x = 27,791.94 × 7,995.56
  4. Step 4: Simplify right side
    18,517.59x = 222,212,083.81
  5. Step 5: Solve for x
    x = 222,212,083.81/18,517.59
  6. Step 6: Final answer
    x = 12,000.06

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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.