Home / 12,439.35-18,660.84-3,673.12

Finding the Fourth Proportional to 12,439.35, 18,660.84 and 3,673.12

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Solution

The fourth proportional to 12,439.35, 18,660.84 and 3,673.12 is: 5,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.35 : 18,660.84 = 3,673.12 : x
  2. Step 2: Convert to fraction form
    12,439.35/18,660.84 = 3,673.12/x
  3. Step 3: Cross multiply
    12,439.35x = 18,660.84 × 3,673.12
  4. Step 4: Simplify right side
    12,439.35x = 68,543,504.62
  5. Step 5: Solve for x
    x = 68,543,504.62/12,439.35
  6. Step 6: Final answer
    x = 5,510.22

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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.