Home / 11,906.21-17,857.94-3,141.80

Finding the Fourth Proportional to 11,906.21, 17,857.94 and 3,141.80

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Solution

The fourth proportional to 11,906.21, 17,857.94 and 3,141.80 is: 4,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,906.21 : 17,857.94 = 3,141.80 : x
  2. Step 2: Convert to fraction form
    11,906.21/17,857.94 = 3,141.80/x
  3. Step 3: Cross multiply
    11,906.21x = 17,857.94 × 3,141.80
  4. Step 4: Simplify right side
    11,906.21x = 56,106,164.82
  5. Step 5: Solve for x
    x = 56,106,164.82/11,906.21
  6. Step 6: Final answer
    x = 4,712.35

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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.