Home / 21,086.94-31,630.41-5,504.43

Finding the Fourth Proportional to 21,086.94, 31,630.41 and 5,504.43

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Solution

The fourth proportional to 21,086.94, 31,630.41 and 5,504.43 is: 8,256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.94 : 31,630.41 = 5,504.43 : x
  2. Step 2: Convert to fraction form
    21,086.94/31,630.41 = 5,504.43/x
  3. Step 3: Cross multiply
    21,086.94x = 31,630.41 × 5,504.43
  4. Step 4: Simplify right side
    21,086.94x = 174,107,377.72
  5. Step 5: Solve for x
    x = 174,107,377.72/21,086.94
  6. Step 6: Final answer
    x = 8,256.65

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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.