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Finding the Fourth Proportional to 18,325.87, 27,489.32 and 6,477.97

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Solution

The fourth proportional to 18,325.87, 27,489.32 and 6,477.97 is: 9,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,325.87 : 27,489.32 = 6,477.97 : x
  2. Step 2: Convert to fraction form
    18,325.87/27,489.32 = 6,477.97/x
  3. Step 3: Cross multiply
    18,325.87x = 27,489.32 × 6,477.97
  4. Step 4: Simplify right side
    18,325.87x = 178,074,941.12
  5. Step 5: Solve for x
    x = 178,074,941.12/18,325.87
  6. Step 6: Final answer
    x = 9,717.13

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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.