Home / 20,067.20-30,102.26-6,919.40

Finding the Fourth Proportional to 20,067.20, 30,102.26 and 6,919.40

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Solution

The fourth proportional to 20,067.20, 30,102.26 and 6,919.40 is: 10,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.20 : 30,102.26 = 6,919.40 : x
  2. Step 2: Convert to fraction form
    20,067.20/30,102.26 = 6,919.40/x
  3. Step 3: Cross multiply
    20,067.20x = 30,102.26 × 6,919.40
  4. Step 4: Simplify right side
    20,067.20x = 208,289,577.84
  5. Step 5: Solve for x
    x = 208,289,577.84/20,067.20
  6. Step 6: Final answer
    x = 10,379.60

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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.