Home / 18,738.20-28,099.20-9,374.60

Finding the Fourth Proportional to 18,738.20, 28,099.20 and 9,374.60

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Solution

The fourth proportional to 18,738.20, 28,099.20 and 9,374.60 is: 14,057.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.20 : 28,099.20 = 9,374.60 : x
  2. Step 2: Convert to fraction form
    18,738.20/28,099.20 = 9,374.60/x
  3. Step 3: Cross multiply
    18,738.20x = 28,099.20 × 9,374.60
  4. Step 4: Simplify right side
    18,738.20x = 263,418,760.32
  5. Step 5: Solve for x
    x = 263,418,760.32/18,738.20
  6. Step 6: Final answer
    x = 14,057.85

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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.