Home / 20,137.20-30,207.62-8,288.21

Finding the Fourth Proportional to 20,137.20, 30,207.62 and 8,288.21

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Solution

The fourth proportional to 20,137.20, 30,207.62 and 8,288.21 is: 12,433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.20 : 30,207.62 = 8,288.21 : x
  2. Step 2: Convert to fraction form
    20,137.20/30,207.62 = 8,288.21/x
  3. Step 3: Cross multiply
    20,137.20x = 30,207.62 × 8,288.21
  4. Step 4: Simplify right side
    20,137.20x = 250,367,098.16
  5. Step 5: Solve for x
    x = 250,367,098.16/20,137.20
  6. Step 6: Final answer
    x = 12,433.06

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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.