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Finding the Fourth Proportional to 28,728, 43,094.52 and 7,951.68

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Solution

The fourth proportional to 28,728, 43,094.52 and 7,951.68 is: 11,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728 : 43,094.52 = 7,951.68 : x
  2. Step 2: Convert to fraction form
    28,728/43,094.52 = 7,951.68/x
  3. Step 3: Cross multiply
    28,728x = 43,094.52 × 7,951.68
  4. Step 4: Simplify right side
    28,728x = 342,673,832.79
  5. Step 5: Solve for x
    x = 342,673,832.79/28,728
  6. Step 6: Final answer
    x = 11,928.22

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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.