Home / 20,380.21-30,573.04-8,065.33

Finding the Fourth Proportional to 20,380.21, 30,573.04 and 8,065.33

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Solution

The fourth proportional to 20,380.21, 30,573.04 and 8,065.33 is: 12,099.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.21 : 30,573.04 = 8,065.33 : x
  2. Step 2: Convert to fraction form
    20,380.21/30,573.04 = 8,065.33/x
  3. Step 3: Cross multiply
    20,380.21x = 30,573.04 × 8,065.33
  4. Step 4: Simplify right side
    20,380.21x = 246,581,656.70
  5. Step 5: Solve for x
    x = 246,581,656.70/20,380.21
  6. Step 6: Final answer
    x = 12,099.07

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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.