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Finding the Fourth Proportional to 9,163.63, 13,740.54 and 2,921.95

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Solution

The fourth proportional to 9,163.63, 13,740.54 and 2,921.95 is: 4,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.63 : 13,740.54 = 2,921.95 : x
  2. Step 2: Convert to fraction form
    9,163.63/13,740.54 = 2,921.95/x
  3. Step 3: Cross multiply
    9,163.63x = 13,740.54 × 2,921.95
  4. Step 4: Simplify right side
    9,163.63x = 40,149,170.85
  5. Step 5: Solve for x
    x = 40,149,170.85/9,163.63
  6. Step 6: Final answer
    x = 4,381.36

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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.