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Finding the Fourth Proportional to 36,939.09, 55,408.65 and 9,237.09

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Solution

The fourth proportional to 36,939.09, 55,408.65 and 9,237.09 is: 13,855.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,939.09 : 55,408.65 = 9,237.09 : x
  2. Step 2: Convert to fraction form
    36,939.09/55,408.65 = 9,237.09/x
  3. Step 3: Cross multiply
    36,939.09x = 55,408.65 × 9,237.09
  4. Step 4: Simplify right side
    36,939.09x = 511,814,859.97
  5. Step 5: Solve for x
    x = 511,814,859.97/36,939.09
  6. Step 6: Final answer
    x = 13,855.64

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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.