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Finding the Fourth Proportional to 28,694.31, 43,046.31 and 8,968.98

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Solution

The fourth proportional to 28,694.31, 43,046.31 and 8,968.98 is: 13,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,694.31 : 43,046.31 = 8,968.98 : x
  2. Step 2: Convert to fraction form
    28,694.31/43,046.31 = 8,968.98/x
  3. Step 3: Cross multiply
    28,694.31x = 43,046.31 × 8,968.98
  4. Step 4: Simplify right side
    28,694.31x = 386,081,493.46
  5. Step 5: Solve for x
    x = 386,081,493.46/28,694.31
  6. Step 6: Final answer
    x = 13,454.98

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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.