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Finding the Fourth Proportional to 36,953.88, 55,416.44 and 11,987.90

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Solution

The fourth proportional to 36,953.88, 55,416.44 and 11,987.90 is: 17,977.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,953.88 : 55,416.44 = 11,987.90 : x
  2. Step 2: Convert to fraction form
    36,953.88/55,416.44 = 11,987.90/x
  3. Step 3: Cross multiply
    36,953.88x = 55,416.44 × 11,987.90
  4. Step 4: Simplify right side
    36,953.88x = 664,326,404.05
  5. Step 5: Solve for x
    x = 664,326,404.05/36,953.88
  6. Step 6: Final answer
    x = 17,977.18

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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.