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Finding the Fourth Proportional to 18,491.98, 27,739.39 and 5,344.47

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Solution

The fourth proportional to 18,491.98, 27,739.39 and 5,344.47 is: 8,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.98 : 27,739.39 = 5,344.47 : x
  2. Step 2: Convert to fraction form
    18,491.98/27,739.39 = 5,344.47/x
  3. Step 3: Cross multiply
    18,491.98x = 27,739.39 × 5,344.47
  4. Step 4: Simplify right side
    18,491.98x = 148,252,337.67
  5. Step 5: Solve for x
    x = 148,252,337.67/18,491.98
  6. Step 6: Final answer
    x = 8,017.12

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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.