Home / 13,824.64-20,730.86-3,961.68

Finding the Fourth Proportional to 13,824.64, 20,730.86 and 3,961.68

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Solution

The fourth proportional to 13,824.64, 20,730.86 and 3,961.68 is: 5,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.64 : 20,730.86 = 3,961.68 : x
  2. Step 2: Convert to fraction form
    13,824.64/20,730.86 = 3,961.68/x
  3. Step 3: Cross multiply
    13,824.64x = 20,730.86 × 3,961.68
  4. Step 4: Simplify right side
    13,824.64x = 82,129,033.44
  5. Step 5: Solve for x
    x = 82,129,033.44/13,824.64
  6. Step 6: Final answer
    x = 5,940.77

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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.