Home / 13,728.60-20,599.79-5,414.58

Finding the Fourth Proportional to 13,728.60, 20,599.79 and 5,414.58

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Solution

The fourth proportional to 13,728.60, 20,599.79 and 5,414.58 is: 8,124.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.60 : 20,599.79 = 5,414.58 : x
  2. Step 2: Convert to fraction form
    13,728.60/20,599.79 = 5,414.58/x
  3. Step 3: Cross multiply
    13,728.60x = 20,599.79 × 5,414.58
  4. Step 4: Simplify right side
    13,728.60x = 111,539,183.87
  5. Step 5: Solve for x
    x = 111,539,183.87/13,728.60
  6. Step 6: Final answer
    x = 8,124.59

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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.