Home / 18,749.04-28,131.32-8,213.61

Finding the Fourth Proportional to 18,749.04, 28,131.32 and 8,213.61

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Solution

The fourth proportional to 18,749.04, 28,131.32 and 8,213.61 is: 12,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.04 : 28,131.32 = 8,213.61 : x
  2. Step 2: Convert to fraction form
    18,749.04/28,131.32 = 8,213.61/x
  3. Step 3: Cross multiply
    18,749.04x = 28,131.32 × 8,213.61
  4. Step 4: Simplify right side
    18,749.04x = 231,059,691.27
  5. Step 5: Solve for x
    x = 231,059,691.27/18,749.04
  6. Step 6: Final answer
    x = 12,323.81

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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.