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Finding the Fourth Proportional to 18,610.38, 27,906.72 and 7,217.62

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Solution

The fourth proportional to 18,610.38, 27,906.72 and 7,217.62 is: 10,823.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.38 : 27,906.72 = 7,217.62 : x
  2. Step 2: Convert to fraction form
    18,610.38/27,906.72 = 7,217.62/x
  3. Step 3: Cross multiply
    18,610.38x = 27,906.72 × 7,217.62
  4. Step 4: Simplify right side
    18,610.38x = 201,420,100.41
  5. Step 5: Solve for x
    x = 201,420,100.41/18,610.38
  6. Step 6: Final answer
    x = 10,823.00

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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.