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Finding the Fourth Proportional to 13,941, 20,911.50 and 3,552.75

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Solution

The fourth proportional to 13,941, 20,911.50 and 3,552.75 is: 5,329.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941 : 20,911.50 = 3,552.75 : x
  2. Step 2: Convert to fraction form
    13,941/20,911.50 = 3,552.75/x
  3. Step 3: Cross multiply
    13,941x = 20,911.50 × 3,552.75
  4. Step 4: Simplify right side
    13,941x = 74,293,331.63
  5. Step 5: Solve for x
    x = 74,293,331.63/13,941
  6. Step 6: Final answer
    x = 5,329.13

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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.