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Finding the Fourth Proportional to 18,170, 27,255 and 5,858

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Solution

The fourth proportional to 18,170, 27,255 and 5,858 is: 8,787

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170 : 27,255 = 5,858 : x
  2. Step 2: Convert to fraction form
    18,170/27,255 = 5,858/x
  3. Step 3: Cross multiply
    18,170x = 27,255 × 5,858
  4. Step 4: Simplify right side
    18,170x = 159,659,790
  5. Step 5: Solve for x
    x = 159,659,790/18,170
  6. Step 6: Final answer
    x = 8,787

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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.