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Finding the Fourth Proportional to 20,310.56, 30,449.68 and 13,334

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Solution

The fourth proportional to 20,310.56, 30,449.68 and 13,334 is: 19,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.56 : 30,449.68 = 13,334 : x
  2. Step 2: Convert to fraction form
    20,310.56/30,449.68 = 13,334/x
  3. Step 3: Cross multiply
    20,310.56x = 30,449.68 × 13,334
  4. Step 4: Simplify right side
    20,310.56x = 406,016,033.12
  5. Step 5: Solve for x
    x = 406,016,033.12/20,310.56
  6. Step 6: Final answer
    x = 19,990.39

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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.