Home / 20,290.32-30,409.11-8,268.44

Finding the Fourth Proportional to 20,290.32, 30,409.11 and 8,268.44

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Solution

The fourth proportional to 20,290.32, 30,409.11 and 8,268.44 is: 12,391.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.32 : 30,409.11 = 8,268.44 : x
  2. Step 2: Convert to fraction form
    20,290.32/30,409.11 = 8,268.44/x
  3. Step 3: Cross multiply
    20,290.32x = 30,409.11 × 8,268.44
  4. Step 4: Simplify right side
    20,290.32x = 251,435,749.44
  5. Step 5: Solve for x
    x = 251,435,749.44/20,290.32
  6. Step 6: Final answer
    x = 12,391.91

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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.