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Finding the Fourth Proportional to 18,161.86, 27,243.40 and 4,834.86

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Solution

The fourth proportional to 18,161.86, 27,243.40 and 4,834.86 is: 7,252.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.86 : 27,243.40 = 4,834.86 : x
  2. Step 2: Convert to fraction form
    18,161.86/27,243.40 = 4,834.86/x
  3. Step 3: Cross multiply
    18,161.86x = 27,243.40 × 4,834.86
  4. Step 4: Simplify right side
    18,161.86x = 131,718,024.92
  5. Step 5: Solve for x
    x = 131,718,024.92/18,161.86
  6. Step 6: Final answer
    x = 7,252.45

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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.