Home / 10,919.81-16,379.73-2,711.81

Finding the Fourth Proportional to 10,919.81, 16,379.73 and 2,711.81

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Solution

The fourth proportional to 10,919.81, 16,379.73 and 2,711.81 is: 4,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.81 : 16,379.73 = 2,711.81 : x
  2. Step 2: Convert to fraction form
    10,919.81/16,379.73 = 2,711.81/x
  3. Step 3: Cross multiply
    10,919.81x = 16,379.73 × 2,711.81
  4. Step 4: Simplify right side
    10,919.81x = 44,418,756.56
  5. Step 5: Solve for x
    x = 44,418,756.56/10,919.81
  6. Step 6: Final answer
    x = 4,067.72

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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.