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Finding the Fourth Proportional to 30,553.38, 45,821.70 and 8,361.54

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Solution

The fourth proportional to 30,553.38, 45,821.70 and 8,361.54 is: 12,540.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,553.38 : 45,821.70 = 8,361.54 : x
  2. Step 2: Convert to fraction form
    30,553.38/45,821.70 = 8,361.54/x
  3. Step 3: Cross multiply
    30,553.38x = 45,821.70 × 8,361.54
  4. Step 4: Simplify right side
    30,553.38x = 383,139,977.42
  5. Step 5: Solve for x
    x = 383,139,977.42/30,553.38
  6. Step 6: Final answer
    x = 12,540.02

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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.