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Finding the Fourth Proportional to 18,541.28, 27,815.55 and 8,153

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Solution

The fourth proportional to 18,541.28, 27,815.55 and 8,153 is: 12,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,541.28 : 27,815.55 = 8,153 : x
  2. Step 2: Convert to fraction form
    18,541.28/27,815.55 = 8,153/x
  3. Step 3: Cross multiply
    18,541.28x = 27,815.55 × 8,153
  4. Step 4: Simplify right side
    18,541.28x = 226,780,179.15
  5. Step 5: Solve for x
    x = 226,780,179.15/18,541.28
  6. Step 6: Final answer
    x = 12,231.10

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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.