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Finding the Fourth Proportional to 11,998.77, 17,996.93 and 3,678.85

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Solution

The fourth proportional to 11,998.77, 17,996.93 and 3,678.85 is: 5,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.77 : 17,996.93 = 3,678.85 : x
  2. Step 2: Convert to fraction form
    11,998.77/17,996.93 = 3,678.85/x
  3. Step 3: Cross multiply
    11,998.77x = 17,996.93 × 3,678.85
  4. Step 4: Simplify right side
    11,998.77x = 66,208,005.93
  5. Step 5: Solve for x
    x = 66,208,005.93/11,998.77
  6. Step 6: Final answer
    x = 5,517.90

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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.