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Finding the Fourth Proportional to 12,190.08, 18,285.12 and 2,956.08

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Solution

The fourth proportional to 12,190.08, 18,285.12 and 2,956.08 is: 4,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.08 : 18,285.12 = 2,956.08 : x
  2. Step 2: Convert to fraction form
    12,190.08/18,285.12 = 2,956.08/x
  3. Step 3: Cross multiply
    12,190.08x = 18,285.12 × 2,956.08
  4. Step 4: Simplify right side
    12,190.08x = 54,052,234.93
  5. Step 5: Solve for x
    x = 54,052,234.93/12,190.08
  6. Step 6: Final answer
    x = 4,434.12

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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.