Home / 13,896.36-20,845.26-7,971.67

Finding the Fourth Proportional to 13,896.36, 20,845.26 and 7,971.67

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Solution

The fourth proportional to 13,896.36, 20,845.26 and 7,971.67 is: 11,957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.36 : 20,845.26 = 7,971.67 : x
  2. Step 2: Convert to fraction form
    13,896.36/20,845.26 = 7,971.67/x
  3. Step 3: Cross multiply
    13,896.36x = 20,845.26 × 7,971.67
  4. Step 4: Simplify right side
    13,896.36x = 166,171,533.78
  5. Step 5: Solve for x
    x = 166,171,533.78/13,896.36
  6. Step 6: Final answer
    x = 11,957.92

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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.