Home / 18,912.08-28,371.20-5,586.43

Finding the Fourth Proportional to 18,912.08, 28,371.20 and 5,586.43

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Solution

The fourth proportional to 18,912.08, 28,371.20 and 5,586.43 is: 8,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.08 : 28,371.20 = 5,586.43 : x
  2. Step 2: Convert to fraction form
    18,912.08/28,371.20 = 5,586.43/x
  3. Step 3: Cross multiply
    18,912.08x = 28,371.20 × 5,586.43
  4. Step 4: Simplify right side
    18,912.08x = 158,493,722.82
  5. Step 5: Solve for x
    x = 158,493,722.82/18,912.08
  6. Step 6: Final answer
    x = 8,380.55

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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.