Home / 13,239.29-19,859.09-3,879.50

Finding the Fourth Proportional to 13,239.29, 19,859.09 and 3,879.50

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Solution

The fourth proportional to 13,239.29, 19,859.09 and 3,879.50 is: 5,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.29 : 19,859.09 = 3,879.50 : x
  2. Step 2: Convert to fraction form
    13,239.29/19,859.09 = 3,879.50/x
  3. Step 3: Cross multiply
    13,239.29x = 19,859.09 × 3,879.50
  4. Step 4: Simplify right side
    13,239.29x = 77,043,253.70
  5. Step 5: Solve for x
    x = 77,043,253.70/13,239.29
  6. Step 6: Final answer
    x = 5,819.29

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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.