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Finding the Fourth Proportional to 36,806.66, 50,791.64 and 20,890.80

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Solution

The fourth proportional to 36,806.66, 50,791.64 and 20,890.80 is: 28,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,806.66 : 50,791.64 = 20,890.80 : x
  2. Step 2: Convert to fraction form
    36,806.66/50,791.64 = 20,890.80/x
  3. Step 3: Cross multiply
    36,806.66x = 50,791.64 × 20,890.80
  4. Step 4: Simplify right side
    36,806.66x = 1,061,077,992.91
  5. Step 5: Solve for x
    x = 1,061,077,992.91/36,806.66
  6. Step 6: Final answer
    x = 28,828.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.