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Finding the Fourth Proportional to 18,209.84, 27,305.42 and 8,340.66

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Solution

The fourth proportional to 18,209.84, 27,305.42 and 8,340.66 is: 12,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209.84 : 27,305.42 = 8,340.66 : x
  2. Step 2: Convert to fraction form
    18,209.84/27,305.42 = 8,340.66/x
  3. Step 3: Cross multiply
    18,209.84x = 27,305.42 × 8,340.66
  4. Step 4: Simplify right side
    18,209.84x = 227,745,224.38
  5. Step 5: Solve for x
    x = 227,745,224.38/18,209.84
  6. Step 6: Final answer
    x = 12,506.71

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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.