Home / 20,896.36-31,344.74-5,313.98

Finding the Fourth Proportional to 20,896.36, 31,344.74 and 5,313.98

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Solution

The fourth proportional to 20,896.36, 31,344.74 and 5,313.98 is: 7,971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.36 : 31,344.74 = 5,313.98 : x
  2. Step 2: Convert to fraction form
    20,896.36/31,344.74 = 5,313.98/x
  3. Step 3: Cross multiply
    20,896.36x = 31,344.74 × 5,313.98
  4. Step 4: Simplify right side
    20,896.36x = 166,565,321.47
  5. Step 5: Solve for x
    x = 166,565,321.47/20,896.36
  6. Step 6: Final answer
    x = 7,971.02

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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.