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Finding the Fourth Proportional to 33,021.66, 49,540.50 and 18,990.66

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Solution

The fourth proportional to 33,021.66, 49,540.50 and 18,990.66 is: 28,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,021.66 : 49,540.50 = 18,990.66 : x
  2. Step 2: Convert to fraction form
    33,021.66/49,540.50 = 18,990.66/x
  3. Step 3: Cross multiply
    33,021.66x = 49,540.50 × 18,990.66
  4. Step 4: Simplify right side
    33,021.66x = 940,806,791.73
  5. Step 5: Solve for x
    x = 940,806,791.73/33,021.66
  6. Step 6: Final answer
    x = 28,490.60

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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.