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Finding the Fourth Proportional to 18,318.86, 27,481.02 and 6,629.34

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Solution

The fourth proportional to 18,318.86, 27,481.02 and 6,629.34 is: 9,945.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.86 : 27,481.02 = 6,629.34 : x
  2. Step 2: Convert to fraction form
    18,318.86/27,481.02 = 6,629.34/x
  3. Step 3: Cross multiply
    18,318.86x = 27,481.02 × 6,629.34
  4. Step 4: Simplify right side
    18,318.86x = 182,181,140.61
  5. Step 5: Solve for x
    x = 182,181,140.61/18,318.86
  6. Step 6: Final answer
    x = 9,945.00

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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.