Home / 13,845.06-20,750.31-6,921.54

Finding the Fourth Proportional to 13,845.06, 20,750.31 and 6,921.54

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Solution

The fourth proportional to 13,845.06, 20,750.31 and 6,921.54 is: 10,373.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.06 : 20,750.31 = 6,921.54 : x
  2. Step 2: Convert to fraction form
    13,845.06/20,750.31 = 6,921.54/x
  3. Step 3: Cross multiply
    13,845.06x = 20,750.31 × 6,921.54
  4. Step 4: Simplify right side
    13,845.06x = 143,624,100.68
  5. Step 5: Solve for x
    x = 143,624,100.68/13,845.06
  6. Step 6: Final answer
    x = 10,373.67

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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.