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Finding the Fourth Proportional to 18,491.49, 27,736.02 and 8,632.98

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Solution

The fourth proportional to 18,491.49, 27,736.02 and 8,632.98 is: 12,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.49 : 27,736.02 = 8,632.98 : x
  2. Step 2: Convert to fraction form
    18,491.49/27,736.02 = 8,632.98/x
  3. Step 3: Cross multiply
    18,491.49x = 27,736.02 × 8,632.98
  4. Step 4: Simplify right side
    18,491.49x = 239,444,505.94
  5. Step 5: Solve for x
    x = 239,444,505.94/18,491.49
  6. Step 6: Final answer
    x = 12,948.90

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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.