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Finding the Fourth Proportional to 18,579.25, 27,866.63 and 4,728.37

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Solution

The fourth proportional to 18,579.25, 27,866.63 and 4,728.37 is: 7,091.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.25 : 27,866.63 = 4,728.37 : x
  2. Step 2: Convert to fraction form
    18,579.25/27,866.63 = 4,728.37/x
  3. Step 3: Cross multiply
    18,579.25x = 27,866.63 × 4,728.37
  4. Step 4: Simplify right side
    18,579.25x = 131,763,737.29
  5. Step 5: Solve for x
    x = 131,763,737.29/18,579.25
  6. Step 6: Final answer
    x = 7,091.98

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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.