Home / 18,939.23-28,408.83-5,791.60

Finding the Fourth Proportional to 18,939.23, 28,408.83 and 5,791.60

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Solution

The fourth proportional to 18,939.23, 28,408.83 and 5,791.60 is: 8,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.23 : 28,408.83 = 5,791.60 : x
  2. Step 2: Convert to fraction form
    18,939.23/28,408.83 = 5,791.60/x
  3. Step 3: Cross multiply
    18,939.23x = 28,408.83 × 5,791.60
  4. Step 4: Simplify right side
    18,939.23x = 164,532,579.83
  5. Step 5: Solve for x
    x = 164,532,579.83/18,939.23
  6. Step 6: Final answer
    x = 8,687.40

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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.