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Finding the Fourth Proportional to 18,114.27, 27,168.29 and 4,787.42

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Solution

The fourth proportional to 18,114.27, 27,168.29 and 4,787.42 is: 7,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,114.27 : 27,168.29 = 4,787.42 : x
  2. Step 2: Convert to fraction form
    18,114.27/27,168.29 = 4,787.42/x
  3. Step 3: Cross multiply
    18,114.27x = 27,168.29 × 4,787.42
  4. Step 4: Simplify right side
    18,114.27x = 130,065,855.13
  5. Step 5: Solve for x
    x = 130,065,855.13/18,114.27
  6. Step 6: Final answer
    x = 7,180.30

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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.