Home / 13,255.91-19,881.33-3,896.36

Finding the Fourth Proportional to 13,255.91, 19,881.33 and 3,896.36

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Solution

The fourth proportional to 13,255.91, 19,881.33 and 3,896.36 is: 5,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.91 : 19,881.33 = 3,896.36 : x
  2. Step 2: Convert to fraction form
    13,255.91/19,881.33 = 3,896.36/x
  3. Step 3: Cross multiply
    13,255.91x = 19,881.33 × 3,896.36
  4. Step 4: Simplify right side
    13,255.91x = 77,464,818.96
  5. Step 5: Solve for x
    x = 77,464,818.96/13,255.91
  6. Step 6: Final answer
    x = 5,843.79

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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.