Home / 20,893.95-31,342.39-8,414.03

Finding the Fourth Proportional to 20,893.95, 31,342.39 and 8,414.03

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Solution

The fourth proportional to 20,893.95, 31,342.39 and 8,414.03 is: 12,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.95 : 31,342.39 = 8,414.03 : x
  2. Step 2: Convert to fraction form
    20,893.95/31,342.39 = 8,414.03/x
  3. Step 3: Cross multiply
    20,893.95x = 31,342.39 × 8,414.03
  4. Step 4: Simplify right side
    20,893.95x = 263,715,738.08
  5. Step 5: Solve for x
    x = 263,715,738.08/20,893.95
  6. Step 6: Final answer
    x = 12,621.63

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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.