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Finding the Fourth Proportional to 20,617.48, 30,942.62 and 7,473.60

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Solution

The fourth proportional to 20,617.48, 30,942.62 and 7,473.60 is: 11,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.48 : 30,942.62 = 7,473.60 : x
  2. Step 2: Convert to fraction form
    20,617.48/30,942.62 = 7,473.60/x
  3. Step 3: Cross multiply
    20,617.48x = 30,942.62 × 7,473.60
  4. Step 4: Simplify right side
    20,617.48x = 231,252,764.83
  5. Step 5: Solve for x
    x = 231,252,764.83/20,617.48
  6. Step 6: Final answer
    x = 11,216.34

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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.