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Finding the Fourth Proportional to 18,174.42, 27,261.90 and 11,974.14

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Solution

The fourth proportional to 18,174.42, 27,261.90 and 11,974.14 is: 17,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,174.42 : 27,261.90 = 11,974.14 : x
  2. Step 2: Convert to fraction form
    18,174.42/27,261.90 = 11,974.14/x
  3. Step 3: Cross multiply
    18,174.42x = 27,261.90 × 11,974.14
  4. Step 4: Simplify right side
    18,174.42x = 326,437,807.27
  5. Step 5: Solve for x
    x = 326,437,807.27/18,174.42
  6. Step 6: Final answer
    x = 17,961.39

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1.5x scale

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.