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Finding the Fourth Proportional to 28,375.74, 39,162.42 and 17,197.74

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Solution

The fourth proportional to 28,375.74, 39,162.42 and 17,197.74 is: 23,735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.74 : 39,162.42 = 17,197.74 : x
  2. Step 2: Convert to fraction form
    28,375.74/39,162.42 = 17,197.74/x
  3. Step 3: Cross multiply
    28,375.74x = 39,162.42 × 17,197.74
  4. Step 4: Simplify right side
    28,375.74x = 673,505,116.93
  5. Step 5: Solve for x
    x = 673,505,116.93/28,375.74
  6. Step 6: Final answer
    x = 23,735.24

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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.