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Finding the Fourth Proportional to 20,603.62, 30,905.42 and 7,452.92

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Solution

The fourth proportional to 20,603.62, 30,905.42 and 7,452.92 is: 11,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.62 : 30,905.42 = 7,452.92 : x
  2. Step 2: Convert to fraction form
    20,603.62/30,905.42 = 7,452.92/x
  3. Step 3: Cross multiply
    20,603.62x = 30,905.42 × 7,452.92
  4. Step 4: Simplify right side
    20,603.62x = 230,335,622.83
  5. Step 5: Solve for x
    x = 230,335,622.83/20,603.62
  6. Step 6: Final answer
    x = 11,179.38

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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.