Home / 20,814.24-28,723.68-11,739.72

Finding the Fourth Proportional to 20,814.24, 28,723.68 and 11,739.72

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Solution

The fourth proportional to 20,814.24, 28,723.68 and 11,739.72 is: 16,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.24 : 28,723.68 = 11,739.72 : x
  2. Step 2: Convert to fraction form
    20,814.24/28,723.68 = 11,739.72/x
  3. Step 3: Cross multiply
    20,814.24x = 28,723.68 × 11,739.72
  4. Step 4: Simplify right side
    20,814.24x = 337,207,960.57
  5. Step 5: Solve for x
    x = 337,207,960.57/20,814.24
  6. Step 6: Final answer
    x = 16,200.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.