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Finding the Fourth Proportional to 20,453.85, 30,700.22 and 10,600.20

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Solution

The fourth proportional to 20,453.85, 30,700.22 and 10,600.20 is: 15,910.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.85 : 30,700.22 = 10,600.20 : x
  2. Step 2: Convert to fraction form
    20,453.85/30,700.22 = 10,600.20/x
  3. Step 3: Cross multiply
    20,453.85x = 30,700.22 × 10,600.20
  4. Step 4: Simplify right side
    20,453.85x = 325,428,419.04
  5. Step 5: Solve for x
    x = 325,428,419.04/20,453.85
  6. Step 6: Final answer
    x = 15,910.37

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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.