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Finding the Fourth Proportional to 12,078.62, 18,096.80 and 8,383.19

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Solution

The fourth proportional to 12,078.62, 18,096.80 and 8,383.19 is: 12,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.62 : 18,096.80 = 8,383.19 : x
  2. Step 2: Convert to fraction form
    12,078.62/18,096.80 = 8,383.19/x
  3. Step 3: Cross multiply
    12,078.62x = 18,096.80 × 8,383.19
  4. Step 4: Simplify right side
    12,078.62x = 151,708,916.12
  5. Step 5: Solve for x
    x = 151,708,916.12/12,078.62
  6. Step 6: Final answer
    x = 12,560.13

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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.