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Finding the Fourth Proportional to 18,136.74, 27,213.48 and 8,279.04

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Solution

The fourth proportional to 18,136.74, 27,213.48 and 8,279.04 is: 12,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.74 : 27,213.48 = 8,279.04 : x
  2. Step 2: Convert to fraction form
    18,136.74/27,213.48 = 8,279.04/x
  3. Step 3: Cross multiply
    18,136.74x = 27,213.48 × 8,279.04
  4. Step 4: Simplify right side
    18,136.74x = 225,301,489.46
  5. Step 5: Solve for x
    x = 225,301,489.46/18,136.74
  6. Step 6: Final answer
    x = 12,422.38

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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.