Home / 10,661.36-15,992.82-3,638.56

Finding the Fourth Proportional to 10,661.36, 15,992.82 and 3,638.56

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Solution

The fourth proportional to 10,661.36, 15,992.82 and 3,638.56 is: 5,458.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.36 : 15,992.82 = 3,638.56 : x
  2. Step 2: Convert to fraction form
    10,661.36/15,992.82 = 3,638.56/x
  3. Step 3: Cross multiply
    10,661.36x = 15,992.82 × 3,638.56
  4. Step 4: Simplify right side
    10,661.36x = 58,190,835.14
  5. Step 5: Solve for x
    x = 58,190,835.14/10,661.36
  6. Step 6: Final answer
    x = 5,458.11

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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.