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Finding the Fourth Proportional to 18,388, 25,375.44 and 10,004.56

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Solution

The fourth proportional to 18,388, 25,375.44 and 10,004.56 is: 13,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388 : 25,375.44 = 10,004.56 : x
  2. Step 2: Convert to fraction form
    18,388/25,375.44 = 10,004.56/x
  3. Step 3: Cross multiply
    18,388x = 25,375.44 × 10,004.56
  4. Step 4: Simplify right side
    18,388x = 253,870,112.01
  5. Step 5: Solve for x
    x = 253,870,112.01/18,388
  6. Step 6: Final answer
    x = 13,806.29

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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.