Home / 12,146.93-18,179.21-7,469.88

Finding the Fourth Proportional to 12,146.93, 18,179.21 and 7,469.88

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Solution

The fourth proportional to 12,146.93, 18,179.21 and 7,469.88 is: 11,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.93 : 18,179.21 = 7,469.88 : x
  2. Step 2: Convert to fraction form
    12,146.93/18,179.21 = 7,469.88/x
  3. Step 3: Cross multiply
    12,146.93x = 18,179.21 × 7,469.88
  4. Step 4: Simplify right side
    12,146.93x = 135,796,517.19
  5. Step 5: Solve for x
    x = 135,796,517.19/12,146.93
  6. Step 6: Final answer
    x = 11,179.49

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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.