Home / 12,480.36-18,724.08-3,715.44

Finding the Fourth Proportional to 12,480.36, 18,724.08 and 3,715.44

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Solution

The fourth proportional to 12,480.36, 18,724.08 and 3,715.44 is: 5,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.36 : 18,724.08 = 3,715.44 : x
  2. Step 2: Convert to fraction form
    12,480.36/18,724.08 = 3,715.44/x
  3. Step 3: Cross multiply
    12,480.36x = 18,724.08 × 3,715.44
  4. Step 4: Simplify right side
    12,480.36x = 69,568,195.80
  5. Step 5: Solve for x
    x = 69,568,195.80/12,480.36
  6. Step 6: Final answer
    x = 5,574.21

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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.