Home / 20,696.10-31,026.60-7,540.80

Finding the Fourth Proportional to 20,696.10, 31,026.60 and 7,540.80

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Solution

The fourth proportional to 20,696.10, 31,026.60 and 7,540.80 is: 11,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.10 : 31,026.60 = 7,540.80 : x
  2. Step 2: Convert to fraction form
    20,696.10/31,026.60 = 7,540.80/x
  3. Step 3: Cross multiply
    20,696.10x = 31,026.60 × 7,540.80
  4. Step 4: Simplify right side
    20,696.10x = 233,965,385.28
  5. Step 5: Solve for x
    x = 233,965,385.28/20,696.10
  6. Step 6: Final answer
    x = 11,304.81

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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.