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Finding the Fourth Proportional to 28,738.62, 43,107.93 and 7,961.58

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Solution

The fourth proportional to 28,738.62, 43,107.93 and 7,961.58 is: 11,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.62 : 43,107.93 = 7,961.58 : x
  2. Step 2: Convert to fraction form
    28,738.62/43,107.93 = 7,961.58/x
  3. Step 3: Cross multiply
    28,738.62x = 43,107.93 × 7,961.58
  4. Step 4: Simplify right side
    28,738.62x = 343,207,233.33
  5. Step 5: Solve for x
    x = 343,207,233.33/28,738.62
  6. Step 6: Final answer
    x = 11,942.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.