Home / 28,144.92-42,189.56-18,143.58

Finding the Fourth Proportional to 28,144.92, 42,189.56 and 18,143.58

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Solution

The fourth proportional to 28,144.92, 42,189.56 and 18,143.58 is: 27,197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.92 : 42,189.56 = 18,143.58 : x
  2. Step 2: Convert to fraction form
    28,144.92/42,189.56 = 18,143.58/x
  3. Step 3: Cross multiply
    28,144.92x = 42,189.56 × 18,143.58
  4. Step 4: Simplify right side
    28,144.92x = 765,469,657.02
  5. Step 5: Solve for x
    x = 765,469,657.02/28,144.92
  6. Step 6: Final answer
    x = 27,197.44

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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.