Home / 20,333.26-28,059.96-11,380.78

Finding the Fourth Proportional to 20,333.26, 28,059.96 and 11,380.78

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Solution

The fourth proportional to 20,333.26, 28,059.96 and 11,380.78 is: 15,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.26 : 28,059.96 = 11,380.78 : x
  2. Step 2: Convert to fraction form
    20,333.26/28,059.96 = 11,380.78/x
  3. Step 3: Cross multiply
    20,333.26x = 28,059.96 × 11,380.78
  4. Step 4: Simplify right side
    20,333.26x = 319,344,231.57
  5. Step 5: Solve for x
    x = 319,344,231.57/20,333.26
  6. Step 6: Final answer
    x = 15,705.51

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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.