Home / 11,718.72-17,571.60-8,908.56

Finding the Fourth Proportional to 11,718.72, 17,571.60 and 8,908.56

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Solution

The fourth proportional to 11,718.72, 17,571.60 and 8,908.56 is: 13,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.72 : 17,571.60 = 8,908.56 : x
  2. Step 2: Convert to fraction form
    11,718.72/17,571.60 = 8,908.56/x
  3. Step 3: Cross multiply
    11,718.72x = 17,571.60 × 8,908.56
  4. Step 4: Simplify right side
    11,718.72x = 156,537,652.90
  5. Step 5: Solve for x
    x = 156,537,652.90/11,718.72
  6. Step 6: Final answer
    x = 13,357.91

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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.