Home / 13,769.31-20,647.56-6,749.67

Finding the Fourth Proportional to 13,769.31, 20,647.56 and 6,749.67

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Solution

The fourth proportional to 13,769.31, 20,647.56 and 6,749.67 is: 10,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.31 : 20,647.56 = 6,749.67 : x
  2. Step 2: Convert to fraction form
    13,769.31/20,647.56 = 6,749.67/x
  3. Step 3: Cross multiply
    13,769.31x = 20,647.56 × 6,749.67
  4. Step 4: Simplify right side
    13,769.31x = 139,364,216.31
  5. Step 5: Solve for x
    x = 139,364,216.31/13,769.31
  6. Step 6: Final answer
    x = 10,121.37

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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.