Home / 13,163.78-19,749.11-5,769.69

Finding the Fourth Proportional to 13,163.78, 19,749.11 and 5,769.69

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Solution

The fourth proportional to 13,163.78, 19,749.11 and 5,769.69 is: 8,656.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.78 : 19,749.11 = 5,769.69 : x
  2. Step 2: Convert to fraction form
    13,163.78/19,749.11 = 5,769.69/x
  3. Step 3: Cross multiply
    13,163.78x = 19,749.11 × 5,769.69
  4. Step 4: Simplify right side
    13,163.78x = 113,946,213.63
  5. Step 5: Solve for x
    x = 113,946,213.63/13,163.78
  6. Step 6: Final answer
    x = 8,656.04

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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.