Home / 11,457.20-17,180.68-3,247.28

Finding the Fourth Proportional to 11,457.20, 17,180.68 and 3,247.28

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Solution

The fourth proportional to 11,457.20, 17,180.68 and 3,247.28 is: 4,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.20 : 17,180.68 = 3,247.28 : x
  2. Step 2: Convert to fraction form
    11,457.20/17,180.68 = 3,247.28/x
  3. Step 3: Cross multiply
    11,457.20x = 17,180.68 × 3,247.28
  4. Step 4: Simplify right side
    11,457.20x = 55,790,478.55
  5. Step 5: Solve for x
    x = 55,790,478.55/11,457.20
  6. Step 6: Final answer
    x = 4,869.47

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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.