Home / 20,895.93-31,343.09-5,313.96

Finding the Fourth Proportional to 20,895.93, 31,343.09 and 5,313.96

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Solution

The fourth proportional to 20,895.93, 31,343.09 and 5,313.96 is: 7,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.93 : 31,343.09 = 5,313.96 : x
  2. Step 2: Convert to fraction form
    20,895.93/31,343.09 = 5,313.96/x
  3. Step 3: Cross multiply
    20,895.93x = 31,343.09 × 5,313.96
  4. Step 4: Simplify right side
    20,895.93x = 166,555,899.97
  5. Step 5: Solve for x
    x = 166,555,899.97/20,895.93
  6. Step 6: Final answer
    x = 7,970.73

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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.