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Finding the Fourth Proportional to 13,872.28, 20,797.02 and 6,473.08

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Solution

The fourth proportional to 13,872.28, 20,797.02 and 6,473.08 is: 9,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.28 : 20,797.02 = 6,473.08 : x
  2. Step 2: Convert to fraction form
    13,872.28/20,797.02 = 6,473.08/x
  3. Step 3: Cross multiply
    13,872.28x = 20,797.02 × 6,473.08
  4. Step 4: Simplify right side
    13,872.28x = 134,620,774.22
  5. Step 5: Solve for x
    x = 134,620,774.22/13,872.28
  6. Step 6: Final answer
    x = 9,704.30

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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.