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Finding the Fourth Proportional to 12,771, 19,158.12 and 3,537

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Solution

The fourth proportional to 12,771, 19,158.12 and 3,537 is: 5,305.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771 : 19,158.12 = 3,537 : x
  2. Step 2: Convert to fraction form
    12,771/19,158.12 = 3,537/x
  3. Step 3: Cross multiply
    12,771x = 19,158.12 × 3,537
  4. Step 4: Simplify right side
    12,771x = 67,762,270.44
  5. Step 5: Solve for x
    x = 67,762,270.44/12,771
  6. Step 6: Final answer
    x = 5,305.95

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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.