Home / 11,881.88-17,826.78-3,985.18

Finding the Fourth Proportional to 11,881.88, 17,826.78 and 3,985.18

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Solution

The fourth proportional to 11,881.88, 17,826.78 and 3,985.18 is: 5,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,881.88 : 17,826.78 = 3,985.18 : x
  2. Step 2: Convert to fraction form
    11,881.88/17,826.78 = 3,985.18/x
  3. Step 3: Cross multiply
    11,881.88x = 17,826.78 × 3,985.18
  4. Step 4: Simplify right side
    11,881.88x = 71,042,927.12
  5. Step 5: Solve for x
    x = 71,042,927.12/11,881.88
  6. Step 6: Final answer
    x = 5,979.10

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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.