Home / 20,571.97-30,851.57-7,422.63

Finding the Fourth Proportional to 20,571.97, 30,851.57 and 7,422.63

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Solution

The fourth proportional to 20,571.97, 30,851.57 and 7,422.63 is: 11,131.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.97 : 30,851.57 = 7,422.63 : x
  2. Step 2: Convert to fraction form
    20,571.97/30,851.57 = 7,422.63/x
  3. Step 3: Cross multiply
    20,571.97x = 30,851.57 × 7,422.63
  4. Step 4: Simplify right side
    20,571.97x = 228,999,789.03
  5. Step 5: Solve for x
    x = 228,999,789.03/20,571.97
  6. Step 6: Final answer
    x = 11,131.64

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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.