Home / 20,596.80-28,422.48-11,643.78

Finding the Fourth Proportional to 20,596.80, 28,422.48 and 11,643.78

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Solution

The fourth proportional to 20,596.80, 28,422.48 and 11,643.78 is: 16,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.80 : 28,422.48 = 11,643.78 : x
  2. Step 2: Convert to fraction form
    20,596.80/28,422.48 = 11,643.78/x
  3. Step 3: Cross multiply
    20,596.80x = 28,422.48 × 11,643.78
  4. Step 4: Simplify right side
    20,596.80x = 330,945,104.17
  5. Step 5: Solve for x
    x = 330,945,104.17/20,596.80
  6. Step 6: Final answer
    x = 16,067.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.