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Finding the Fourth Proportional to 13,891.26, 20,837.02 and 3,503.02

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Solution

The fourth proportional to 13,891.26, 20,837.02 and 3,503.02 is: 5,254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.26 : 20,837.02 = 3,503.02 : x
  2. Step 2: Convert to fraction form
    13,891.26/20,837.02 = 3,503.02/x
  3. Step 3: Cross multiply
    13,891.26x = 20,837.02 × 3,503.02
  4. Step 4: Simplify right side
    13,891.26x = 72,992,497.80
  5. Step 5: Solve for x
    x = 72,992,497.80/13,891.26
  6. Step 6: Final answer
    x = 5,254.56

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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.