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Finding the Fourth Proportional to 18,476.88, 27,731.08 and 7,391.36

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Solution

The fourth proportional to 18,476.88, 27,731.08 and 7,391.36 is: 11,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.88 : 27,731.08 = 7,391.36 : x
  2. Step 2: Convert to fraction form
    18,476.88/27,731.08 = 7,391.36/x
  3. Step 3: Cross multiply
    18,476.88x = 27,731.08 × 7,391.36
  4. Step 4: Simplify right side
    18,476.88x = 204,970,395.47
  5. Step 5: Solve for x
    x = 204,970,395.47/18,476.88
  6. Step 6: Final answer
    x = 11,093.34

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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.