Home / 12,240.72-18,355.44-3,919.08

Finding the Fourth Proportional to 12,240.72, 18,355.44 and 3,919.08

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Solution

The fourth proportional to 12,240.72, 18,355.44 and 3,919.08 is: 5,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.72 : 18,355.44 = 3,919.08 : x
  2. Step 2: Convert to fraction form
    12,240.72/18,355.44 = 3,919.08/x
  3. Step 3: Cross multiply
    12,240.72x = 18,355.44 × 3,919.08
  4. Step 4: Simplify right side
    12,240.72x = 71,936,437.80
  5. Step 5: Solve for x
    x = 71,936,437.80/12,240.72
  6. Step 6: Final answer
    x = 5,876.81

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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.