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Finding the Fourth Proportional to 12,263.74, 18,398.78 and 3,944.94

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Solution

The fourth proportional to 12,263.74, 18,398.78 and 3,944.94 is: 5,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,263.74 : 18,398.78 = 3,944.94 : x
  2. Step 2: Convert to fraction form
    12,263.74/18,398.78 = 3,944.94/x
  3. Step 3: Cross multiply
    12,263.74x = 18,398.78 × 3,944.94
  4. Step 4: Simplify right side
    12,263.74x = 72,582,083.17
  5. Step 5: Solve for x
    x = 72,582,083.17/12,263.74
  6. Step 6: Final answer
    x = 5,918.43

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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.