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Finding the Fourth Proportional to 18,394.43, 27,570.04 and 8,512.83

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Solution

The fourth proportional to 18,394.43, 27,570.04 and 8,512.83 is: 12,759.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.43 : 27,570.04 = 8,512.83 : x
  2. Step 2: Convert to fraction form
    18,394.43/27,570.04 = 8,512.83/x
  3. Step 3: Cross multiply
    18,394.43x = 27,570.04 × 8,512.83
  4. Step 4: Simplify right side
    18,394.43x = 234,699,021.05
  5. Step 5: Solve for x
    x = 234,699,021.05/18,394.43
  6. Step 6: Final answer
    x = 12,759.25

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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.