Home / 10,919.50-16,381.98-3,523.79

Finding the Fourth Proportional to 10,919.50, 16,381.98 and 3,523.79

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Solution

The fourth proportional to 10,919.50, 16,381.98 and 3,523.79 is: 5,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.50 : 16,381.98 = 3,523.79 : x
  2. Step 2: Convert to fraction form
    10,919.50/16,381.98 = 3,523.79/x
  3. Step 3: Cross multiply
    10,919.50x = 16,381.98 × 3,523.79
  4. Step 4: Simplify right side
    10,919.50x = 57,726,698.26
  5. Step 5: Solve for x
    x = 57,726,698.26/10,919.50
  6. Step 6: Final answer
    x = 5,286.57

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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.