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Finding the Fourth Proportional to 11,321.39, 16,992.89 and 6,947.39

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Solution

The fourth proportional to 11,321.39, 16,992.89 and 6,947.39 is: 10,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.39 : 16,992.89 = 6,947.39 : x
  2. Step 2: Convert to fraction form
    11,321.39/16,992.89 = 6,947.39/x
  3. Step 3: Cross multiply
    11,321.39x = 16,992.89 × 6,947.39
  4. Step 4: Simplify right side
    11,321.39x = 118,056,114.36
  5. Step 5: Solve for x
    x = 118,056,114.36/11,321.39
  6. Step 6: Final answer
    x = 10,427.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.