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Finding the Fourth Proportional to 14,894.68, 20,553.86 and 8,179

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Solution

The fourth proportional to 14,894.68, 20,553.86 and 8,179 is: 11,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.68 : 20,553.86 = 8,179 : x
  2. Step 2: Convert to fraction form
    14,894.68/20,553.86 = 8,179/x
  3. Step 3: Cross multiply
    14,894.68x = 20,553.86 × 8,179
  4. Step 4: Simplify right side
    14,894.68x = 168,110,020.94
  5. Step 5: Solve for x
    x = 168,110,020.94/14,894.68
  6. Step 6: Final answer
    x = 11,286.58

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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.