Home / 12,919.22-19,380.87-5,523.72

Finding the Fourth Proportional to 12,919.22, 19,380.87 and 5,523.72

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Solution

The fourth proportional to 12,919.22, 19,380.87 and 5,523.72 is: 8,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.22 : 19,380.87 = 5,523.72 : x
  2. Step 2: Convert to fraction form
    12,919.22/19,380.87 = 5,523.72/x
  3. Step 3: Cross multiply
    12,919.22x = 19,380.87 × 5,523.72
  4. Step 4: Simplify right side
    12,919.22x = 107,054,471.62
  5. Step 5: Solve for x
    x = 107,054,471.62/12,919.22
  6. Step 6: Final answer
    x = 8,286.45

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1.5x scale

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.