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Finding the Fourth Proportional to 36,855.75, 55,283.63 and 12,231.75

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Solution

The fourth proportional to 36,855.75, 55,283.63 and 12,231.75 is: 18,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,855.75 : 55,283.63 = 12,231.75 : x
  2. Step 2: Convert to fraction form
    36,855.75/55,283.63 = 12,231.75/x
  3. Step 3: Cross multiply
    36,855.75x = 55,283.63 × 12,231.75
  4. Step 4: Simplify right side
    36,855.75x = 676,215,480.09
  5. Step 5: Solve for x
    x = 676,215,480.09/36,855.75
  6. Step 6: Final answer
    x = 18,347.63

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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.