Home / 13,691.44-20,571.12-8,763.28

Finding the Fourth Proportional to 13,691.44, 20,571.12 and 8,763.28

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Solution

The fourth proportional to 13,691.44, 20,571.12 and 8,763.28 is: 13,166.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.44 : 20,571.12 = 8,763.28 : x
  2. Step 2: Convert to fraction form
    13,691.44/20,571.12 = 8,763.28/x
  3. Step 3: Cross multiply
    13,691.44x = 20,571.12 × 8,763.28
  4. Step 4: Simplify right side
    13,691.44x = 180,270,484.47
  5. Step 5: Solve for x
    x = 180,270,484.47/13,691.44
  6. Step 6: Final answer
    x = 13,166.66

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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.