Home / 20,961.43-31,445.27-6,922.94

Finding the Fourth Proportional to 20,961.43, 31,445.27 and 6,922.94

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Solution

The fourth proportional to 20,961.43, 31,445.27 and 6,922.94 is: 10,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.43 : 31,445.27 = 6,922.94 : x
  2. Step 2: Convert to fraction form
    20,961.43/31,445.27 = 6,922.94/x
  3. Step 3: Cross multiply
    20,961.43x = 31,445.27 × 6,922.94
  4. Step 4: Simplify right side
    20,961.43x = 217,693,717.49
  5. Step 5: Solve for x
    x = 217,693,717.49/20,961.43
  6. Step 6: Final answer
    x = 10,385.44

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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.