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Finding the Fourth Proportional to 29,021, 43,532 and 12,605

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Solution

The fourth proportional to 29,021, 43,532 and 12,605 is: 18,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,021 : 43,532 = 12,605 : x
  2. Step 2: Convert to fraction form
    29,021/43,532 = 12,605/x
  3. Step 3: Cross multiply
    29,021x = 43,532 × 12,605
  4. Step 4: Simplify right side
    29,021x = 548,720,860
  5. Step 5: Solve for x
    x = 548,720,860/29,021
  6. Step 6: Final answer
    x = 18,907.72

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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.