Home / 18,626.21-27,939.30-5,478.58

Finding the Fourth Proportional to 18,626.21, 27,939.30 and 5,478.58

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Solution

The fourth proportional to 18,626.21, 27,939.30 and 5,478.58 is: 8,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.21 : 27,939.30 = 5,478.58 : x
  2. Step 2: Convert to fraction form
    18,626.21/27,939.30 = 5,478.58/x
  3. Step 3: Cross multiply
    18,626.21x = 27,939.30 × 5,478.58
  4. Step 4: Simplify right side
    18,626.21x = 153,067,620.35
  5. Step 5: Solve for x
    x = 153,067,620.35/18,626.21
  6. Step 6: Final answer
    x = 8,217.86

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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.