Home / 18,388.40-25,375.26-10,004.90

Finding the Fourth Proportional to 18,388.40, 25,375.26 and 10,004.90

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Solution

The fourth proportional to 18,388.40, 25,375.26 and 10,004.90 is: 13,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.40 : 25,375.26 = 10,004.90 : x
  2. Step 2: Convert to fraction form
    18,388.40/25,375.26 = 10,004.90/x
  3. Step 3: Cross multiply
    18,388.40x = 25,375.26 × 10,004.90
  4. Step 4: Simplify right side
    18,388.40x = 253,876,938.77
  5. Step 5: Solve for x
    x = 253,876,938.77/18,388.40
  6. Step 6: Final answer
    x = 13,806.36

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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.