Home / 20,696.72-31,035.56-6,654.15

Finding the Fourth Proportional to 20,696.72, 31,035.56 and 6,654.15

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Solution

The fourth proportional to 20,696.72, 31,035.56 and 6,654.15 is: 9,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.72 : 31,035.56 = 6,654.15 : x
  2. Step 2: Convert to fraction form
    20,696.72/31,035.56 = 6,654.15/x
  3. Step 3: Cross multiply
    20,696.72x = 31,035.56 × 6,654.15
  4. Step 4: Simplify right side
    20,696.72x = 206,515,238.30
  5. Step 5: Solve for x
    x = 206,515,238.30/20,696.72
  6. Step 6: Final answer
    x = 9,978.17

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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.