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Finding the Fourth Proportional to 20,603.57, 30,905.28 and 7,452.84

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Solution

The fourth proportional to 20,603.57, 30,905.28 and 7,452.84 is: 11,179.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.57 : 30,905.28 = 7,452.84 : x
  2. Step 2: Convert to fraction form
    20,603.57/30,905.28 = 7,452.84/x
  3. Step 3: Cross multiply
    20,603.57x = 30,905.28 × 7,452.84
  4. Step 4: Simplify right side
    20,603.57x = 230,332,222.89
  5. Step 5: Solve for x
    x = 230,332,222.89/20,603.57
  6. Step 6: Final answer
    x = 11,179.24

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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.