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Finding the Fourth Proportional to 18,340.56, 27,510.60 and 4,489.68

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Solution

The fourth proportional to 18,340.56, 27,510.60 and 4,489.68 is: 6,734.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.56 : 27,510.60 = 4,489.68 : x
  2. Step 2: Convert to fraction form
    18,340.56/27,510.60 = 4,489.68/x
  3. Step 3: Cross multiply
    18,340.56x = 27,510.60 × 4,489.68
  4. Step 4: Simplify right side
    18,340.56x = 123,513,790.61
  5. Step 5: Solve for x
    x = 123,513,790.61/18,340.56
  6. Step 6: Final answer
    x = 6,734.46

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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.