Home / 12,122.75-18,184.13-3,914.75

Finding the Fourth Proportional to 12,122.75, 18,184.13 and 3,914.75

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Solution

The fourth proportional to 12,122.75, 18,184.13 and 3,914.75 is: 5,872.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.75 : 18,184.13 = 3,914.75 : x
  2. Step 2: Convert to fraction form
    12,122.75/18,184.13 = 3,914.75/x
  3. Step 3: Cross multiply
    12,122.75x = 18,184.13 × 3,914.75
  4. Step 4: Simplify right side
    12,122.75x = 71,186,322.92
  5. Step 5: Solve for x
    x = 71,186,322.92/12,122.75
  6. Step 6: Final answer
    x = 5,872.13

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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.