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Finding the Fourth Proportional to 13,806.62, 20,719.01 and 7,571.02

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Solution

The fourth proportional to 13,806.62, 20,719.01 and 7,571.02 is: 11,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.62 : 20,719.01 = 7,571.02 : x
  2. Step 2: Convert to fraction form
    13,806.62/20,719.01 = 7,571.02/x
  3. Step 3: Cross multiply
    13,806.62x = 20,719.01 × 7,571.02
  4. Step 4: Simplify right side
    13,806.62x = 156,864,002.48
  5. Step 5: Solve for x
    x = 156,864,002.48/13,806.62
  6. Step 6: Final answer
    x = 11,361.51

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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.