Home / 13,961.45-20,940.15-4,099.70

Finding the Fourth Proportional to 13,961.45, 20,940.15 and 4,099.70

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Solution

The fourth proportional to 13,961.45, 20,940.15 and 4,099.70 is: 6,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.45 : 20,940.15 = 4,099.70 : x
  2. Step 2: Convert to fraction form
    13,961.45/20,940.15 = 4,099.70/x
  3. Step 3: Cross multiply
    13,961.45x = 20,940.15 × 4,099.70
  4. Step 4: Simplify right side
    13,961.45x = 85,848,332.96
  5. Step 5: Solve for x
    x = 85,848,332.96/13,961.45
  6. Step 6: Final answer
    x = 6,148.96

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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.