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Finding the Fourth Proportional to 28,879, 43,335.78 and 12,463

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Solution

The fourth proportional to 28,879, 43,335.78 and 12,463 is: 18,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879 : 43,335.78 = 12,463 : x
  2. Step 2: Convert to fraction form
    28,879/43,335.78 = 12,463/x
  3. Step 3: Cross multiply
    28,879x = 43,335.78 × 12,463
  4. Step 4: Simplify right side
    28,879x = 540,093,826.14
  5. Step 5: Solve for x
    x = 540,093,826.14/28,879
  6. Step 6: Final answer
    x = 18,701.96

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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.