Home / 18,910.43-28,380.77-8,522.99

Finding the Fourth Proportional to 18,910.43, 28,380.77 and 8,522.99

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Solution

The fourth proportional to 18,910.43, 28,380.77 and 8,522.99 is: 12,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.43 : 28,380.77 = 8,522.99 : x
  2. Step 2: Convert to fraction form
    18,910.43/28,380.77 = 8,522.99/x
  3. Step 3: Cross multiply
    18,910.43x = 28,380.77 × 8,522.99
  4. Step 4: Simplify right side
    18,910.43x = 241,888,976.29
  5. Step 5: Solve for x
    x = 241,888,976.29/18,910.43
  6. Step 6: Final answer
    x = 12,791.30

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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.