Home / 13,278.26-19,917.39-3,918.41

Finding the Fourth Proportional to 13,278.26, 19,917.39 and 3,918.41

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Solution

The fourth proportional to 13,278.26, 19,917.39 and 3,918.41 is: 5,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.26 : 19,917.39 = 3,918.41 : x
  2. Step 2: Convert to fraction form
    13,278.26/19,917.39 = 3,918.41/x
  3. Step 3: Cross multiply
    13,278.26x = 19,917.39 × 3,918.41
  4. Step 4: Simplify right side
    13,278.26x = 78,044,489.95
  5. Step 5: Solve for x
    x = 78,044,489.95/13,278.26
  6. Step 6: Final answer
    x = 5,877.61

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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.