Home / 20,504.22-30,716.37-12,984.72

Finding the Fourth Proportional to 20,504.22, 30,716.37 and 12,984.72

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Solution

The fourth proportional to 20,504.22, 30,716.37 and 12,984.72 is: 19,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.22 : 30,716.37 = 12,984.72 : x
  2. Step 2: Convert to fraction form
    20,504.22/30,716.37 = 12,984.72/x
  3. Step 3: Cross multiply
    20,504.22x = 30,716.37 × 12,984.72
  4. Step 4: Simplify right side
    20,504.22x = 398,843,463.87
  5. Step 5: Solve for x
    x = 398,843,463.87/20,504.22
  6. Step 6: Final answer
    x = 19,451.77

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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.