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Finding the Fourth Proportional to 36,989, 55,490.79 and 12,027.44

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Solution

The fourth proportional to 36,989, 55,490.79 and 12,027.44 is: 18,043.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,989 : 55,490.79 = 12,027.44 : x
  2. Step 2: Convert to fraction form
    36,989/55,490.79 = 12,027.44/x
  3. Step 3: Cross multiply
    36,989x = 55,490.79 × 12,027.44
  4. Step 4: Simplify right side
    36,989x = 667,412,147.28
  5. Step 5: Solve for x
    x = 667,412,147.28/36,989
  6. Step 6: Final answer
    x = 18,043.53

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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.