Home / 18,489.45-25,515.44-10,105.95

Finding the Fourth Proportional to 18,489.45, 25,515.44 and 10,105.95

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Solution

The fourth proportional to 18,489.45, 25,515.44 and 10,105.95 is: 13,946.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.45 : 25,515.44 = 10,105.95 : x
  2. Step 2: Convert to fraction form
    18,489.45/25,515.44 = 10,105.95/x
  3. Step 3: Cross multiply
    18,489.45x = 25,515.44 × 10,105.95
  4. Step 4: Simplify right side
    18,489.45x = 257,857,760.87
  5. Step 5: Solve for x
    x = 257,857,760.87/18,489.45
  6. Step 6: Final answer
    x = 13,946.21

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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.