Home / 20,622.20-30,936.82-8,135.70

Finding the Fourth Proportional to 20,622.20, 30,936.82 and 8,135.70

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Solution

The fourth proportional to 20,622.20, 30,936.82 and 8,135.70 is: 12,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.20 : 30,936.82 = 8,135.70 : x
  2. Step 2: Convert to fraction form
    20,622.20/30,936.82 = 8,135.70/x
  3. Step 3: Cross multiply
    20,622.20x = 30,936.82 × 8,135.70
  4. Step 4: Simplify right side
    20,622.20x = 251,692,686.47
  5. Step 5: Solve for x
    x = 251,692,686.47/20,622.20
  6. Step 6: Final answer
    x = 12,204.94

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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.