Home / 18,788.49-28,183.25-5,640.86

Finding the Fourth Proportional to 18,788.49, 28,183.25 and 5,640.86

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Solution

The fourth proportional to 18,788.49, 28,183.25 and 5,640.86 is: 8,461.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.49 : 28,183.25 = 5,640.86 : x
  2. Step 2: Convert to fraction form
    18,788.49/28,183.25 = 5,640.86/x
  3. Step 3: Cross multiply
    18,788.49x = 28,183.25 × 5,640.86
  4. Step 4: Simplify right side
    18,788.49x = 158,977,767.60
  5. Step 5: Solve for x
    x = 158,977,767.60/18,788.49
  6. Step 6: Final answer
    x = 8,461.44

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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.