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Finding the Fourth Proportional to 12,184.56, 16,815.02 and 6,879.42

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Solution

The fourth proportional to 12,184.56, 16,815.02 and 6,879.42 is: 9,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.56 : 16,815.02 = 6,879.42 : x
  2. Step 2: Convert to fraction form
    12,184.56/16,815.02 = 6,879.42/x
  3. Step 3: Cross multiply
    12,184.56x = 16,815.02 × 6,879.42
  4. Step 4: Simplify right side
    12,184.56x = 115,677,550.49
  5. Step 5: Solve for x
    x = 115,677,550.49/12,184.56
  6. Step 6: Final answer
    x = 9,493.78

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1.5x scale

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.