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Finding the Fourth Proportional to 13,749.75, 20,625.03 and 3,361.50

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Solution

The fourth proportional to 13,749.75, 20,625.03 and 3,361.50 is: 5,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.75 : 20,625.03 = 3,361.50 : x
  2. Step 2: Convert to fraction form
    13,749.75/20,625.03 = 3,361.50/x
  3. Step 3: Cross multiply
    13,749.75x = 20,625.03 × 3,361.50
  4. Step 4: Simplify right side
    13,749.75x = 69,331,038.35
  5. Step 5: Solve for x
    x = 69,331,038.35/13,749.75
  6. Step 6: Final answer
    x = 5,042.35

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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.