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Finding the Fourth Proportional to 8,806.62, 13,190.55 and 8,321.37

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Solution

The fourth proportional to 8,806.62, 13,190.55 and 8,321.37 is: 12,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.62 : 13,190.55 = 8,321.37 : x
  2. Step 2: Convert to fraction form
    8,806.62/13,190.55 = 8,321.37/x
  3. Step 3: Cross multiply
    8,806.62x = 13,190.55 × 8,321.37
  4. Step 4: Simplify right side
    8,806.62x = 109,763,447.05
  5. Step 5: Solve for x
    x = 109,763,447.05/8,806.62
  6. Step 6: Final answer
    x = 12,463.74

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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.