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Finding the Fourth Proportional to 18,136.22, 27,199.05 and 7,605.95

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Solution

The fourth proportional to 18,136.22, 27,199.05 and 7,605.95 is: 11,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.22 : 27,199.05 = 7,605.95 : x
  2. Step 2: Convert to fraction form
    18,136.22/27,199.05 = 7,605.95/x
  3. Step 3: Cross multiply
    18,136.22x = 27,199.05 × 7,605.95
  4. Step 4: Simplify right side
    18,136.22x = 206,874,478.35
  5. Step 5: Solve for x
    x = 206,874,478.35/18,136.22
  6. Step 6: Final answer
    x = 11,406.71

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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.