Home / 20,961.41-31,445.97-6,922.39

Finding the Fourth Proportional to 20,961.41, 31,445.97 and 6,922.39

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Solution

The fourth proportional to 20,961.41, 31,445.97 and 6,922.39 is: 10,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.41 : 31,445.97 = 6,922.39 : x
  2. Step 2: Convert to fraction form
    20,961.41/31,445.97 = 6,922.39/x
  3. Step 3: Cross multiply
    20,961.41x = 31,445.97 × 6,922.39
  4. Step 4: Simplify right side
    20,961.41x = 217,681,268.27
  5. Step 5: Solve for x
    x = 217,681,268.27/20,961.41
  6. Step 6: Final answer
    x = 10,384.86

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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.