Home / 13,239.20-19,858.77-3,378.46

Finding the Fourth Proportional to 13,239.20, 19,858.77 and 3,378.46

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Solution

The fourth proportional to 13,239.20, 19,858.77 and 3,378.46 is: 5,067.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.20 : 19,858.77 = 3,378.46 : x
  2. Step 2: Convert to fraction form
    13,239.20/19,858.77 = 3,378.46/x
  3. Step 3: Cross multiply
    13,239.20x = 19,858.77 × 3,378.46
  4. Step 4: Simplify right side
    13,239.20x = 67,092,047.68
  5. Step 5: Solve for x
    x = 67,092,047.68/13,239.20
  6. Step 6: Final answer
    x = 5,067.68

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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.