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Finding the Fourth Proportional to 18,613.56, 27,929.94 and 8,232.60

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Solution

The fourth proportional to 18,613.56, 27,929.94 and 8,232.60 is: 12,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.56 : 27,929.94 = 8,232.60 : x
  2. Step 2: Convert to fraction form
    18,613.56/27,929.94 = 8,232.60/x
  3. Step 3: Cross multiply
    18,613.56x = 27,929.94 × 8,232.60
  4. Step 4: Simplify right side
    18,613.56x = 229,936,024.04
  5. Step 5: Solve for x
    x = 229,936,024.04/18,613.56
  6. Step 6: Final answer
    x = 12,353.15

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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.