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Finding the Fourth Proportional to 19,091.26, 28,626.02 and 7,843.40

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Solution

The fourth proportional to 19,091.26, 28,626.02 and 7,843.40 is: 11,760.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.26 : 28,626.02 = 7,843.40 : x
  2. Step 2: Convert to fraction form
    19,091.26/28,626.02 = 7,843.40/x
  3. Step 3: Cross multiply
    19,091.26x = 28,626.02 × 7,843.40
  4. Step 4: Simplify right side
    19,091.26x = 224,525,325.27
  5. Step 5: Solve for x
    x = 224,525,325.27/19,091.26
  6. Step 6: Final answer
    x = 11,760.63

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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.