Home / 13,309.87-18,369.33-11,067.89

Finding the Fourth Proportional to 13,309.87, 18,369.33 and 11,067.89

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Solution

The fourth proportional to 13,309.87, 18,369.33 and 11,067.89 is: 15,275.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.87 : 18,369.33 = 11,067.89 : x
  2. Step 2: Convert to fraction form
    13,309.87/18,369.33 = 11,067.89/x
  3. Step 3: Cross multiply
    13,309.87x = 18,369.33 × 11,067.89
  4. Step 4: Simplify right side
    13,309.87x = 203,309,723.81
  5. Step 5: Solve for x
    x = 203,309,723.81/13,309.87
  6. Step 6: Final answer
    x = 15,275.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.