Home / 13,249.78-19,874.39-3,889.59

Finding the Fourth Proportional to 13,249.78, 19,874.39 and 3,889.59

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Solution

The fourth proportional to 13,249.78, 19,874.39 and 3,889.59 is: 5,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.78 : 19,874.39 = 3,889.59 : x
  2. Step 2: Convert to fraction form
    13,249.78/19,874.39 = 3,889.59/x
  3. Step 3: Cross multiply
    13,249.78x = 19,874.39 × 3,889.59
  4. Step 4: Simplify right side
    13,249.78x = 77,303,268.30
  5. Step 5: Solve for x
    x = 77,303,268.30/13,249.78
  6. Step 6: Final answer
    x = 5,834.30

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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.