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Finding the Fourth Proportional to 27,261.26, 40,902.02 and 18,936.89

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Solution

The fourth proportional to 27,261.26, 40,902.02 and 18,936.89 is: 28,412.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,261.26 : 40,902.02 = 18,936.89 : x
  2. Step 2: Convert to fraction form
    27,261.26/40,902.02 = 18,936.89/x
  3. Step 3: Cross multiply
    27,261.26x = 40,902.02 × 18,936.89
  4. Step 4: Simplify right side
    27,261.26x = 774,557,053.52
  5. Step 5: Solve for x
    x = 774,557,053.52/27,261.26
  6. Step 6: Final answer
    x = 28,412.37

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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.