Home / 13,820.44-20,730.68-3,960.32

Finding the Fourth Proportional to 13,820.44, 20,730.68 and 3,960.32

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Solution

The fourth proportional to 13,820.44, 20,730.68 and 3,960.32 is: 5,940.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.44 : 20,730.68 = 3,960.32 : x
  2. Step 2: Convert to fraction form
    13,820.44/20,730.68 = 3,960.32/x
  3. Step 3: Cross multiply
    13,820.44x = 20,730.68 × 3,960.32
  4. Step 4: Simplify right side
    13,820.44x = 82,100,126.62
  5. Step 5: Solve for x
    x = 82,100,126.62/13,820.44
  6. Step 6: Final answer
    x = 5,940.49

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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.