Home / 20,380.77-28,112.52-14,723.83

Finding the Fourth Proportional to 20,380.77, 28,112.52 and 14,723.83

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Solution

The fourth proportional to 20,380.77, 28,112.52 and 14,723.83 is: 20,309.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.77 : 28,112.52 = 14,723.83 : x
  2. Step 2: Convert to fraction form
    20,380.77/28,112.52 = 14,723.83/x
  3. Step 3: Cross multiply
    20,380.77x = 28,112.52 × 14,723.83
  4. Step 4: Simplify right side
    20,380.77x = 413,923,891.73
  5. Step 5: Solve for x
    x = 413,923,891.73/20,380.77
  6. Step 6: Final answer
    x = 20,309.53

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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.