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Finding the Fourth Proportional to 13,937.25, 20,907.09 and 3,549

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Solution

The fourth proportional to 13,937.25, 20,907.09 and 3,549 is: 5,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.25 : 20,907.09 = 3,549 : x
  2. Step 2: Convert to fraction form
    13,937.25/20,907.09 = 3,549/x
  3. Step 3: Cross multiply
    13,937.25x = 20,907.09 × 3,549
  4. Step 4: Simplify right side
    13,937.25x = 74,199,262.41
  5. Step 5: Solve for x
    x = 74,199,262.41/13,937.25
  6. Step 6: Final answer
    x = 5,323.81

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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.