Home / 20,571.44-30,850.76-7,422.10

Finding the Fourth Proportional to 20,571.44, 30,850.76 and 7,422.10

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Solution

The fourth proportional to 20,571.44, 30,850.76 and 7,422.10 is: 11,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.44 : 30,850.76 = 7,422.10 : x
  2. Step 2: Convert to fraction form
    20,571.44/30,850.76 = 7,422.10/x
  3. Step 3: Cross multiply
    20,571.44x = 30,850.76 × 7,422.10
  4. Step 4: Simplify right side
    20,571.44x = 228,977,425.80
  5. Step 5: Solve for x
    x = 228,977,425.80/20,571.44
  6. Step 6: Final answer
    x = 11,130.84

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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.