Home / 20,634.18-30,955.44-8,160.12

Finding the Fourth Proportional to 20,634.18, 30,955.44 and 8,160.12

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Solution

The fourth proportional to 20,634.18, 30,955.44 and 8,160.12 is: 12,241.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.18 : 30,955.44 = 8,160.12 : x
  2. Step 2: Convert to fraction form
    20,634.18/30,955.44 = 8,160.12/x
  3. Step 3: Cross multiply
    20,634.18x = 30,955.44 × 8,160.12
  4. Step 4: Simplify right side
    20,634.18x = 252,600,105.05
  5. Step 5: Solve for x
    x = 252,600,105.05/20,634.18
  6. Step 6: Final answer
    x = 12,241.83

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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.