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Finding the Fourth Proportional to 28,731, 43,099.02 and 7,954.68

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Solution

The fourth proportional to 28,731, 43,099.02 and 7,954.68 is: 11,932.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731 : 43,099.02 = 7,954.68 : x
  2. Step 2: Convert to fraction form
    28,731/43,099.02 = 7,954.68/x
  3. Step 3: Cross multiply
    28,731x = 43,099.02 × 7,954.68
  4. Step 4: Simplify right side
    28,731x = 342,838,912.41
  5. Step 5: Solve for x
    x = 342,838,912.41/28,731
  6. Step 6: Final answer
    x = 11,932.72

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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.