Home / 21,180.97-31,771.46-7,326.73

Finding the Fourth Proportional to 21,180.97, 31,771.46 and 7,326.73

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Solution

The fourth proportional to 21,180.97, 31,771.46 and 7,326.73 is: 10,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.97 : 31,771.46 = 7,326.73 : x
  2. Step 2: Convert to fraction form
    21,180.97/31,771.46 = 7,326.73/x
  3. Step 3: Cross multiply
    21,180.97x = 31,771.46 × 7,326.73
  4. Step 4: Simplify right side
    21,180.97x = 232,780,909.13
  5. Step 5: Solve for x
    x = 232,780,909.13/21,180.97
  6. Step 6: Final answer
    x = 10,990.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.