Home / 20,708.44-31,042.14-8,221.12

Finding the Fourth Proportional to 20,708.44, 31,042.14 and 8,221.12

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Solution

The fourth proportional to 20,708.44, 31,042.14 and 8,221.12 is: 12,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.44 : 31,042.14 = 8,221.12 : x
  2. Step 2: Convert to fraction form
    20,708.44/31,042.14 = 8,221.12/x
  3. Step 3: Cross multiply
    20,708.44x = 31,042.14 × 8,221.12
  4. Step 4: Simplify right side
    20,708.44x = 255,201,158.00
  5. Step 5: Solve for x
    x = 255,201,158.00/20,708.44
  6. Step 6: Final answer
    x = 12,323.53

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1.5x scale

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.