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Finding the Fourth Proportional to 11,998.71, 17,997.42 and 3,678.75

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Solution

The fourth proportional to 11,998.71, 17,997.42 and 3,678.75 is: 5,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.71 : 17,997.42 = 3,678.75 : x
  2. Step 2: Convert to fraction form
    11,998.71/17,997.42 = 3,678.75/x
  3. Step 3: Cross multiply
    11,998.71x = 17,997.42 × 3,678.75
  4. Step 4: Simplify right side
    11,998.71x = 66,208,008.83
  5. Step 5: Solve for x
    x = 66,208,008.83/11,998.71
  6. Step 6: Final answer
    x = 5,517.93

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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.