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Finding the Fourth Proportional to 20,600.37, 30,900.54 and 7,449.68

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Solution

The fourth proportional to 20,600.37, 30,900.54 and 7,449.68 is: 11,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.37 : 30,900.54 = 7,449.68 : x
  2. Step 2: Convert to fraction form
    20,600.37/30,900.54 = 7,449.68/x
  3. Step 3: Cross multiply
    20,600.37x = 30,900.54 × 7,449.68
  4. Step 4: Simplify right side
    20,600.37x = 230,198,980.32
  5. Step 5: Solve for x
    x = 230,198,980.32/20,600.37
  6. Step 6: Final answer
    x = 11,174.51

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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.