Home / 18,830.39-28,234.51-7,144.43

Finding the Fourth Proportional to 18,830.39, 28,234.51 and 7,144.43

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Solution

The fourth proportional to 18,830.39, 28,234.51 and 7,144.43 is: 10,712.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.39 : 28,234.51 = 7,144.43 : x
  2. Step 2: Convert to fraction form
    18,830.39/28,234.51 = 7,144.43/x
  3. Step 3: Cross multiply
    18,830.39x = 28,234.51 × 7,144.43
  4. Step 4: Simplify right side
    18,830.39x = 201,719,321.25
  5. Step 5: Solve for x
    x = 201,719,321.25/18,830.39
  6. Step 6: Final answer
    x = 10,712.44

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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.