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Finding the Fourth Proportional to 14,979, 20,671.02 and 8,694.84

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Solution

The fourth proportional to 14,979, 20,671.02 and 8,694.84 is: 11,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979 : 20,671.02 = 8,694.84 : x
  2. Step 2: Convert to fraction form
    14,979/20,671.02 = 8,694.84/x
  3. Step 3: Cross multiply
    14,979x = 20,671.02 × 8,694.84
  4. Step 4: Simplify right side
    14,979x = 179,731,211.54
  5. Step 5: Solve for x
    x = 179,731,211.54/14,979
  6. Step 6: Final answer
    x = 11,998.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.