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Finding the Fourth Proportional to 18,244.50, 25,177.44 and 9,861

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Solution

The fourth proportional to 18,244.50, 25,177.44 and 9,861 is: 13,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,244.50 : 25,177.44 = 9,861 : x
  2. Step 2: Convert to fraction form
    18,244.50/25,177.44 = 9,861/x
  3. Step 3: Cross multiply
    18,244.50x = 25,177.44 × 9,861
  4. Step 4: Simplify right side
    18,244.50x = 248,274,735.84
  5. Step 5: Solve for x
    x = 248,274,735.84/18,244.50
  6. Step 6: Final answer
    x = 13,608.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.