Home / 20,333.25-28,059.88-11,380.75

Finding the Fourth Proportional to 20,333.25, 28,059.88 and 11,380.75

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Solution

The fourth proportional to 20,333.25, 28,059.88 and 11,380.75 is: 15,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.25 : 28,059.88 = 11,380.75 : x
  2. Step 2: Convert to fraction form
    20,333.25/28,059.88 = 11,380.75/x
  3. Step 3: Cross multiply
    20,333.25x = 28,059.88 × 11,380.75
  4. Step 4: Simplify right side
    20,333.25x = 319,342,422.41
  5. Step 5: Solve for x
    x = 319,342,422.41/20,333.25
  6. Step 6: Final answer
    x = 15,705.43

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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.