Home / 18,997.19-28,480.41-7,912.18

Finding the Fourth Proportional to 18,997.19, 28,480.41 and 7,912.18

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Solution

The fourth proportional to 18,997.19, 28,480.41 and 7,912.18 is: 11,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.19 : 28,480.41 = 7,912.18 : x
  2. Step 2: Convert to fraction form
    18,997.19/28,480.41 = 7,912.18/x
  3. Step 3: Cross multiply
    18,997.19x = 28,480.41 × 7,912.18
  4. Step 4: Simplify right side
    18,997.19x = 225,342,137.07
  5. Step 5: Solve for x
    x = 225,342,137.07/18,997.19
  6. Step 6: Final answer
    x = 11,861.86

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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.