Home / 18,744.78-25,855.26-13,631.70

Finding the Fourth Proportional to 18,744.78, 25,855.26 and 13,631.70

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Solution

The fourth proportional to 18,744.78, 25,855.26 and 13,631.70 is: 18,802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.78 : 25,855.26 = 13,631.70 : x
  2. Step 2: Convert to fraction form
    18,744.78/25,855.26 = 13,631.70/x
  3. Step 3: Cross multiply
    18,744.78x = 25,855.26 × 13,631.70
  4. Step 4: Simplify right side
    18,744.78x = 352,451,147.74
  5. Step 5: Solve for x
    x = 352,451,147.74/18,744.78
  6. Step 6: Final answer
    x = 18,802.63

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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.