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Finding the Fourth Proportional to 28,344.94, 42,517.81 and 9,876.94

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Solution

The fourth proportional to 28,344.94, 42,517.81 and 9,876.94 is: 14,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.94 : 42,517.81 = 9,876.94 : x
  2. Step 2: Convert to fraction form
    28,344.94/42,517.81 = 9,876.94/x
  3. Step 3: Cross multiply
    28,344.94x = 42,517.81 × 9,876.94
  4. Step 4: Simplify right side
    28,344.94x = 419,945,764.35
  5. Step 5: Solve for x
    x = 419,945,764.35/28,344.94
  6. Step 6: Final answer
    x = 14,815.55

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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.