Home / 12,118.75-18,178.13-3,234.11

Finding the Fourth Proportional to 12,118.75, 18,178.13 and 3,234.11

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Solution

The fourth proportional to 12,118.75, 18,178.13 and 3,234.11 is: 4,851.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.75 : 18,178.13 = 3,234.11 : x
  2. Step 2: Convert to fraction form
    12,118.75/18,178.13 = 3,234.11/x
  3. Step 3: Cross multiply
    12,118.75x = 18,178.13 × 3,234.11
  4. Step 4: Simplify right side
    12,118.75x = 58,790,072.01
  5. Step 5: Solve for x
    x = 58,790,072.01/12,118.75
  6. Step 6: Final answer
    x = 4,851.17

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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.