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Finding the Fourth Proportional to 18,345.15, 27,517.93 and 5,865.08

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Solution

The fourth proportional to 18,345.15, 27,517.93 and 5,865.08 is: 8,797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.15 : 27,517.93 = 5,865.08 : x
  2. Step 2: Convert to fraction form
    18,345.15/27,517.93 = 5,865.08/x
  3. Step 3: Cross multiply
    18,345.15x = 27,517.93 × 5,865.08
  4. Step 4: Simplify right side
    18,345.15x = 161,394,708.63
  5. Step 5: Solve for x
    x = 161,394,708.63/18,345.15
  6. Step 6: Final answer
    x = 8,797.68

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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.