Home / 13,120.44-18,105.96-7,152

Finding the Fourth Proportional to 13,120.44, 18,105.96 and 7,152

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Solution

The fourth proportional to 13,120.44, 18,105.96 and 7,152 is: 9,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.44 : 18,105.96 = 7,152 : x
  2. Step 2: Convert to fraction form
    13,120.44/18,105.96 = 7,152/x
  3. Step 3: Cross multiply
    13,120.44x = 18,105.96 × 7,152
  4. Step 4: Simplify right side
    13,120.44x = 129,493,825.92
  5. Step 5: Solve for x
    x = 129,493,825.92/13,120.44
  6. Step 6: Final answer
    x = 9,869.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.