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Finding the Fourth Proportional to 11,751.64, 17,625.44 and 3,318.73

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Solution

The fourth proportional to 11,751.64, 17,625.44 and 3,318.73 is: 4,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,751.64 : 17,625.44 = 3,318.73 : x
  2. Step 2: Convert to fraction form
    11,751.64/17,625.44 = 3,318.73/x
  3. Step 3: Cross multiply
    11,751.64x = 17,625.44 × 3,318.73
  4. Step 4: Simplify right side
    11,751.64x = 58,494,106.82
  5. Step 5: Solve for x
    x = 58,494,106.82/11,751.64
  6. Step 6: Final answer
    x = 4,977.53

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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.