Home / 13,163.75-19,749.05-3,929.75

Finding the Fourth Proportional to 13,163.75, 19,749.05 and 3,929.75

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Solution

The fourth proportional to 13,163.75, 19,749.05 and 3,929.75 is: 5,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.75 : 19,749.05 = 3,929.75 : x
  2. Step 2: Convert to fraction form
    13,163.75/19,749.05 = 3,929.75/x
  3. Step 3: Cross multiply
    13,163.75x = 19,749.05 × 3,929.75
  4. Step 4: Simplify right side
    13,163.75x = 77,608,829.24
  5. Step 5: Solve for x
    x = 77,608,829.24/13,163.75
  6. Step 6: Final answer
    x = 5,895.65

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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.