Home / 20,486.28-30,711.10-8,003.37

Finding the Fourth Proportional to 20,486.28, 30,711.10 and 8,003.37

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Solution

The fourth proportional to 20,486.28, 30,711.10 and 8,003.37 is: 11,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.28 : 30,711.10 = 8,003.37 : x
  2. Step 2: Convert to fraction form
    20,486.28/30,711.10 = 8,003.37/x
  3. Step 3: Cross multiply
    20,486.28x = 30,711.10 × 8,003.37
  4. Step 4: Simplify right side
    20,486.28x = 245,792,296.41
  5. Step 5: Solve for x
    x = 245,792,296.41/20,486.28
  6. Step 6: Final answer
    x = 11,997.90

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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.