Home / 20,738.04-31,098.20-7,906.80

Finding the Fourth Proportional to 20,738.04, 31,098.20 and 7,906.80

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Solution

The fourth proportional to 20,738.04, 31,098.20 and 7,906.80 is: 11,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.04 : 31,098.20 = 7,906.80 : x
  2. Step 2: Convert to fraction form
    20,738.04/31,098.20 = 7,906.80/x
  3. Step 3: Cross multiply
    20,738.04x = 31,098.20 × 7,906.80
  4. Step 4: Simplify right side
    20,738.04x = 245,887,247.76
  5. Step 5: Solve for x
    x = 245,887,247.76/20,738.04
  6. Step 6: Final answer
    x = 11,856.82

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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.