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Finding the Fourth Proportional to 11,538, 17,309.61 and 3,640.46

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Solution

The fourth proportional to 11,538, 17,309.61 and 3,640.46 is: 5,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538 : 17,309.61 = 3,640.46 : x
  2. Step 2: Convert to fraction form
    11,538/17,309.61 = 3,640.46/x
  3. Step 3: Cross multiply
    11,538x = 17,309.61 × 3,640.46
  4. Step 4: Simplify right side
    11,538x = 63,014,856.27
  5. Step 5: Solve for x
    x = 63,014,856.27/11,538
  6. Step 6: Final answer
    x = 5,461.51

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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.