Home / 20,784.24-31,194.09-8,313.03

Finding the Fourth Proportional to 20,784.24, 31,194.09 and 8,313.03

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Solution

The fourth proportional to 20,784.24, 31,194.09 and 8,313.03 is: 12,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.24 : 31,194.09 = 8,313.03 : x
  2. Step 2: Convert to fraction form
    20,784.24/31,194.09 = 8,313.03/x
  3. Step 3: Cross multiply
    20,784.24x = 31,194.09 × 8,313.03
  4. Step 4: Simplify right side
    20,784.24x = 259,317,405.99
  5. Step 5: Solve for x
    x = 259,317,405.99/20,784.24
  6. Step 6: Final answer
    x = 12,476.64

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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.