Home / 20,380.86-30,571.29-13,453.74

Finding the Fourth Proportional to 20,380.86, 30,571.29 and 13,453.74

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Solution

The fourth proportional to 20,380.86, 30,571.29 and 13,453.74 is: 20,180.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.86 : 30,571.29 = 13,453.74 : x
  2. Step 2: Convert to fraction form
    20,380.86/30,571.29 = 13,453.74/x
  3. Step 3: Cross multiply
    20,380.86x = 30,571.29 × 13,453.74
  4. Step 4: Simplify right side
    20,380.86x = 411,298,187.12
  5. Step 5: Solve for x
    x = 411,298,187.12/20,380.86
  6. Step 6: Final answer
    x = 20,180.61

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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.