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Finding the Fourth Proportional to 18,610.86, 27,891.66 and 13,657.26

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Solution

The fourth proportional to 18,610.86, 27,891.66 and 13,657.26 is: 20,467.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.86 : 27,891.66 = 13,657.26 : x
  2. Step 2: Convert to fraction form
    18,610.86/27,891.66 = 13,657.26/x
  3. Step 3: Cross multiply
    18,610.86x = 27,891.66 × 13,657.26
  4. Step 4: Simplify right side
    18,610.86x = 380,923,652.45
  5. Step 5: Solve for x
    x = 380,923,652.45/18,610.86
  6. Step 6: Final answer
    x = 20,467.82

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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.