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Finding the Fourth Proportional to 19,791.39, 29,689.04 and 5,751.54

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Solution

The fourth proportional to 19,791.39, 29,689.04 and 5,751.54 is: 8,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.39 : 29,689.04 = 5,751.54 : x
  2. Step 2: Convert to fraction form
    19,791.39/29,689.04 = 5,751.54/x
  3. Step 3: Cross multiply
    19,791.39x = 29,689.04 × 5,751.54
  4. Step 4: Simplify right side
    19,791.39x = 170,757,672.36
  5. Step 5: Solve for x
    x = 170,757,672.36/19,791.39
  6. Step 6: Final answer
    x = 8,627.88

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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.