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Finding the Fourth Proportional to 14,728, 20,324.80 and 8,104

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Solution

The fourth proportional to 14,728, 20,324.80 and 8,104 is: 11,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728 : 20,324.80 = 8,104 : x
  2. Step 2: Convert to fraction form
    14,728/20,324.80 = 8,104/x
  3. Step 3: Cross multiply
    14,728x = 20,324.80 × 8,104
  4. Step 4: Simplify right side
    14,728x = 164,712,179.20
  5. Step 5: Solve for x
    x = 164,712,179.20/14,728
  6. Step 6: Final answer
    x = 11,183.61

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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.