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Finding the Fourth Proportional to 12,394.43, 18,591.68 and 8,713.13

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Solution

The fourth proportional to 12,394.43, 18,591.68 and 8,713.13 is: 13,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.43 : 18,591.68 = 8,713.13 : x
  2. Step 2: Convert to fraction form
    12,394.43/18,591.68 = 8,713.13/x
  3. Step 3: Cross multiply
    12,394.43x = 18,591.68 × 8,713.13
  4. Step 4: Simplify right side
    12,394.43x = 161,991,588.23
  5. Step 5: Solve for x
    x = 161,991,588.23/12,394.43
  6. Step 6: Final answer
    x = 13,069.71

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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.