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Finding the Fourth Proportional to 18,601.16, 27,905.10 and 6,121.88

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Solution

The fourth proportional to 18,601.16, 27,905.10 and 6,121.88 is: 9,183.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.16 : 27,905.10 = 6,121.88 : x
  2. Step 2: Convert to fraction form
    18,601.16/27,905.10 = 6,121.88/x
  3. Step 3: Cross multiply
    18,601.16x = 27,905.10 × 6,121.88
  4. Step 4: Simplify right side
    18,601.16x = 170,831,673.59
  5. Step 5: Solve for x
    x = 170,831,673.59/18,601.16
  6. Step 6: Final answer
    x = 9,183.93

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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.