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Finding the Fourth Proportional to 11,879.94, 16,396.05 and 6,843.19

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Solution

The fourth proportional to 11,879.94, 16,396.05 and 6,843.19 is: 9,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.94 : 16,396.05 = 6,843.19 : x
  2. Step 2: Convert to fraction form
    11,879.94/16,396.05 = 6,843.19/x
  3. Step 3: Cross multiply
    11,879.94x = 16,396.05 × 6,843.19
  4. Step 4: Simplify right side
    11,879.94x = 112,201,300.81
  5. Step 5: Solve for x
    x = 112,201,300.81/11,879.94
  6. Step 6: Final answer
    x = 9,444.60

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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.