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Finding the Fourth Proportional to 11,999.12, 17,998.44 and 4,982.92

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Solution

The fourth proportional to 11,999.12, 17,998.44 and 4,982.92 is: 7,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.12 : 17,998.44 = 4,982.92 : x
  2. Step 2: Convert to fraction form
    11,999.12/17,998.44 = 4,982.92/x
  3. Step 3: Cross multiply
    11,999.12x = 17,998.44 × 4,982.92
  4. Step 4: Simplify right side
    11,999.12x = 89,684,786.64
  5. Step 5: Solve for x
    x = 89,684,786.64/11,999.12
  6. Step 6: Final answer
    x = 7,474.28

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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.