Home / 15,200.82-20,976.75-9,885.60

Finding the Fourth Proportional to 15,200.82, 20,976.75 and 9,885.60

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Solution

The fourth proportional to 15,200.82, 20,976.75 and 9,885.60 is: 13,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.82 : 20,976.75 = 9,885.60 : x
  2. Step 2: Convert to fraction form
    15,200.82/20,976.75 = 9,885.60/x
  3. Step 3: Cross multiply
    15,200.82x = 20,976.75 × 9,885.60
  4. Step 4: Simplify right side
    15,200.82x = 207,367,759.80
  5. Step 5: Solve for x
    x = 207,367,759.80/15,200.82
  6. Step 6: Final answer
    x = 13,641.88

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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.