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Finding the Fourth Proportional to 11,409.98, 17,117.37 and 6,481.90

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Solution

The fourth proportional to 11,409.98, 17,117.37 and 6,481.90 is: 9,724.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.98 : 17,117.37 = 6,481.90 : x
  2. Step 2: Convert to fraction form
    11,409.98/17,117.37 = 6,481.90/x
  3. Step 3: Cross multiply
    11,409.98x = 17,117.37 × 6,481.90
  4. Step 4: Simplify right side
    11,409.98x = 110,953,080.60
  5. Step 5: Solve for x
    x = 110,953,080.60/11,409.98
  6. Step 6: Final answer
    x = 9,724.21

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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.