Home / 13,806.12-20,679.96-11,162.28

Finding the Fourth Proportional to 13,806.12, 20,679.96 and 11,162.28

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Solution

The fourth proportional to 13,806.12, 20,679.96 and 11,162.28 is: 16,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.12 : 20,679.96 = 11,162.28 : x
  2. Step 2: Convert to fraction form
    13,806.12/20,679.96 = 11,162.28/x
  3. Step 3: Cross multiply
    13,806.12x = 20,679.96 × 11,162.28
  4. Step 4: Simplify right side
    13,806.12x = 230,835,503.91
  5. Step 5: Solve for x
    x = 230,835,503.91/13,806.12
  6. Step 6: Final answer
    x = 16,719.80

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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.