Home / 13,812.78-20,716.26-4,453.65

Finding the Fourth Proportional to 13,812.78, 20,716.26 and 4,453.65

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Solution

The fourth proportional to 13,812.78, 20,716.26 and 4,453.65 is: 6,679.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.78 : 20,716.26 = 4,453.65 : x
  2. Step 2: Convert to fraction form
    13,812.78/20,716.26 = 4,453.65/x
  3. Step 3: Cross multiply
    13,812.78x = 20,716.26 × 4,453.65
  4. Step 4: Simplify right side
    13,812.78x = 92,262,971.35
  5. Step 5: Solve for x
    x = 92,262,971.35/13,812.78
  6. Step 6: Final answer
    x = 6,679.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.