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Finding the Fourth Proportional to 18,103.62, 27,120.08 and 8,602.42

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Solution

The fourth proportional to 18,103.62, 27,120.08 and 8,602.42 is: 12,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.62 : 27,120.08 = 8,602.42 : x
  2. Step 2: Convert to fraction form
    18,103.62/27,120.08 = 8,602.42/x
  3. Step 3: Cross multiply
    18,103.62x = 27,120.08 × 8,602.42
  4. Step 4: Simplify right side
    18,103.62x = 233,298,182.99
  5. Step 5: Solve for x
    x = 233,298,182.99/18,103.62
  6. Step 6: Final answer
    x = 12,886.83

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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.