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Finding the Fourth Proportional to 12,392.71, 18,591.99 and 4,072.75

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Solution

The fourth proportional to 12,392.71, 18,591.99 and 4,072.75 is: 6,110.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.71 : 18,591.99 = 4,072.75 : x
  2. Step 2: Convert to fraction form
    12,392.71/18,591.99 = 4,072.75/x
  3. Step 3: Cross multiply
    12,392.71x = 18,591.99 × 4,072.75
  4. Step 4: Simplify right side
    12,392.71x = 75,720,527.27
  5. Step 5: Solve for x
    x = 75,720,527.27/12,392.71
  6. Step 6: Final answer
    x = 6,110.09

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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.