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Finding the Fourth Proportional to 38,513.01, 57,790.88 and 18,791.73

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Solution

The fourth proportional to 38,513.01, 57,790.88 and 18,791.73 is: 28,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,513.01 : 57,790.88 = 18,791.73 : x
  2. Step 2: Convert to fraction form
    38,513.01/57,790.88 = 18,791.73/x
  3. Step 3: Cross multiply
    38,513.01x = 57,790.88 × 18,791.73
  4. Step 4: Simplify right side
    38,513.01x = 1,085,990,613.42
  5. Step 5: Solve for x
    x = 1,085,990,613.42/38,513.01
  6. Step 6: Final answer
    x = 28,198.02

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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.