Home / 21,760.25-30,031.66-12,202.75

Finding the Fourth Proportional to 21,760.25, 30,031.66 and 12,202.75

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Solution

The fourth proportional to 21,760.25, 30,031.66 and 12,202.75 is: 16,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.25 : 30,031.66 = 12,202.75 : x
  2. Step 2: Convert to fraction form
    21,760.25/30,031.66 = 12,202.75/x
  3. Step 3: Cross multiply
    21,760.25x = 30,031.66 × 12,202.75
  4. Step 4: Simplify right side
    21,760.25x = 366,468,891.86
  5. Step 5: Solve for x
    x = 366,468,891.86/21,760.25
  6. Step 6: Final answer
    x = 16,841.21

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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.