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Finding the Fourth Proportional to 12,104.94, 18,159.94 and 3,784.62

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Solution

The fourth proportional to 12,104.94, 18,159.94 and 3,784.62 is: 5,677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,104.94 : 18,159.94 = 3,784.62 : x
  2. Step 2: Convert to fraction form
    12,104.94/18,159.94 = 3,784.62/x
  3. Step 3: Cross multiply
    12,104.94x = 18,159.94 × 3,784.62
  4. Step 4: Simplify right side
    12,104.94x = 68,728,472.12
  5. Step 5: Solve for x
    x = 68,728,472.12/12,104.94
  6. Step 6: Final answer
    x = 5,677.72

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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.