Home / 21,100.44-31,650.66-5,517.93

Finding the Fourth Proportional to 21,100.44, 31,650.66 and 5,517.93

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Solution

The fourth proportional to 21,100.44, 31,650.66 and 5,517.93 is: 8,276.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.44 : 31,650.66 = 5,517.93 : x
  2. Step 2: Convert to fraction form
    21,100.44/31,650.66 = 5,517.93/x
  3. Step 3: Cross multiply
    21,100.44x = 31,650.66 × 5,517.93
  4. Step 4: Simplify right side
    21,100.44x = 174,646,126.33
  5. Step 5: Solve for x
    x = 174,646,126.33/21,100.44
  6. Step 6: Final answer
    x = 8,276.90

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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.