Home / 11,806.78-17,705.68-3,906.93

Finding the Fourth Proportional to 11,806.78, 17,705.68 and 3,906.93

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Solution

The fourth proportional to 11,806.78, 17,705.68 and 3,906.93 is: 5,858.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,806.78 : 17,705.68 = 3,906.93 : x
  2. Step 2: Convert to fraction form
    11,806.78/17,705.68 = 3,906.93/x
  3. Step 3: Cross multiply
    11,806.78x = 17,705.68 × 3,906.93
  4. Step 4: Simplify right side
    11,806.78x = 69,174,852.36
  5. Step 5: Solve for x
    x = 69,174,852.36/11,806.78
  6. Step 6: Final answer
    x = 5,858.91

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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.