Home / 13,919.43-20,879.45-5,154.42

Finding the Fourth Proportional to 13,919.43, 20,879.45 and 5,154.42

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Solution

The fourth proportional to 13,919.43, 20,879.45 and 5,154.42 is: 7,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.43 : 20,879.45 = 5,154.42 : x
  2. Step 2: Convert to fraction form
    13,919.43/20,879.45 = 5,154.42/x
  3. Step 3: Cross multiply
    13,919.43x = 20,879.45 × 5,154.42
  4. Step 4: Simplify right side
    13,919.43x = 107,621,519.75
  5. Step 5: Solve for x
    x = 107,621,519.75/13,919.43
  6. Step 6: Final answer
    x = 7,731.75

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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.