Home / 12,115.45-18,171.06-3,230.89

Finding the Fourth Proportional to 12,115.45, 18,171.06 and 3,230.89

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Solution

The fourth proportional to 12,115.45, 18,171.06 and 3,230.89 is: 4,845.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.45 : 18,171.06 = 3,230.89 : x
  2. Step 2: Convert to fraction form
    12,115.45/18,171.06 = 3,230.89/x
  3. Step 3: Cross multiply
    12,115.45x = 18,171.06 × 3,230.89
  4. Step 4: Simplify right side
    12,115.45x = 58,708,696.04
  5. Step 5: Solve for x
    x = 58,708,696.04/12,115.45
  6. Step 6: Final answer
    x = 4,845.77

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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.