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Finding the Fourth Proportional to 18,691.24, 28,035.76 and 7,003.48

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Solution

The fourth proportional to 18,691.24, 28,035.76 and 7,003.48 is: 10,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.24 : 28,035.76 = 7,003.48 : x
  2. Step 2: Convert to fraction form
    18,691.24/28,035.76 = 7,003.48/x
  3. Step 3: Cross multiply
    18,691.24x = 28,035.76 × 7,003.48
  4. Step 4: Simplify right side
    18,691.24x = 196,347,884.44
  5. Step 5: Solve for x
    x = 196,347,884.44/18,691.24
  6. Step 6: Final answer
    x = 10,504.81

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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.