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Finding the Fourth Proportional to 11,879.62, 16,394.45 and 6,844.61

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Solution

The fourth proportional to 11,879.62, 16,394.45 and 6,844.61 is: 9,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.62 : 16,394.45 = 6,844.61 : x
  2. Step 2: Convert to fraction form
    11,879.62/16,394.45 = 6,844.61/x
  3. Step 3: Cross multiply
    11,879.62x = 16,394.45 × 6,844.61
  4. Step 4: Simplify right side
    11,879.62x = 112,213,623.18
  5. Step 5: Solve for x
    x = 112,213,623.18/11,879.62
  6. Step 6: Final answer
    x = 9,445.90

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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.