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Finding the Fourth Proportional to 18,102.42, 27,162.90 and 8,625.48

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Solution

The fourth proportional to 18,102.42, 27,162.90 and 8,625.48 is: 12,942.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.42 : 27,162.90 = 8,625.48 : x
  2. Step 2: Convert to fraction form
    18,102.42/27,162.90 = 8,625.48/x
  3. Step 3: Cross multiply
    18,102.42x = 27,162.90 × 8,625.48
  4. Step 4: Simplify right side
    18,102.42x = 234,293,050.69
  5. Step 5: Solve for x
    x = 234,293,050.69/18,102.42
  6. Step 6: Final answer
    x = 12,942.64

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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.