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Finding the Fourth Proportional to 18,610.36, 27,919.62 and 6,129.88

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Solution

The fourth proportional to 18,610.36, 27,919.62 and 6,129.88 is: 9,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.36 : 27,919.62 = 6,129.88 : x
  2. Step 2: Convert to fraction form
    18,610.36/27,919.62 = 6,129.88/x
  3. Step 3: Cross multiply
    18,610.36x = 27,919.62 × 6,129.88
  4. Step 4: Simplify right side
    18,610.36x = 171,143,920.25
  5. Step 5: Solve for x
    x = 171,143,920.25/18,610.36
  6. Step 6: Final answer
    x = 9,196.16

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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.