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Finding the Fourth Proportional to 11,999.98, 17,999.89 and 4,098.68

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Solution

The fourth proportional to 11,999.98, 17,999.89 and 4,098.68 is: 6,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.98 : 17,999.89 = 4,098.68 : x
  2. Step 2: Convert to fraction form
    11,999.98/17,999.89 = 4,098.68/x
  3. Step 3: Cross multiply
    11,999.98x = 17,999.89 × 4,098.68
  4. Step 4: Simplify right side
    11,999.98x = 73,775,789.15
  5. Step 5: Solve for x
    x = 73,775,789.15/11,999.98
  6. Step 6: Final answer
    x = 6,147.99

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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.