Home / 13,926.80-20,891.42-5,161.79

Finding the Fourth Proportional to 13,926.80, 20,891.42 and 5,161.79

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Solution

The fourth proportional to 13,926.80, 20,891.42 and 5,161.79 is: 7,743.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.80 : 20,891.42 = 5,161.79 : x
  2. Step 2: Convert to fraction form
    13,926.80/20,891.42 = 5,161.79/x
  3. Step 3: Cross multiply
    13,926.80x = 20,891.42 × 5,161.79
  4. Step 4: Simplify right side
    13,926.80x = 107,837,097.03
  5. Step 5: Solve for x
    x = 107,837,097.03/13,926.80
  6. Step 6: Final answer
    x = 7,743.14

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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.