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Finding the Fourth Proportional to 18,587.39, 27,859.48 and 6,893.15

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Solution

The fourth proportional to 18,587.39, 27,859.48 and 6,893.15 is: 10,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.39 : 27,859.48 = 6,893.15 : x
  2. Step 2: Convert to fraction form
    18,587.39/27,859.48 = 6,893.15/x
  3. Step 3: Cross multiply
    18,587.39x = 27,859.48 × 6,893.15
  4. Step 4: Simplify right side
    18,587.39x = 192,039,418.03
  5. Step 5: Solve for x
    x = 192,039,418.03/18,587.39
  6. Step 6: Final answer
    x = 10,331.71

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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.