Home / 20,116.54-27,760.35-11,163.88

Finding the Fourth Proportional to 20,116.54, 27,760.35 and 11,163.88

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Solution

The fourth proportional to 20,116.54, 27,760.35 and 11,163.88 is: 15,405.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.54 : 27,760.35 = 11,163.88 : x
  2. Step 2: Convert to fraction form
    20,116.54/27,760.35 = 11,163.88/x
  3. Step 3: Cross multiply
    20,116.54x = 27,760.35 × 11,163.88
  4. Step 4: Simplify right side
    20,116.54x = 309,913,216.16
  5. Step 5: Solve for x
    x = 309,913,216.16/20,116.54
  6. Step 6: Final answer
    x = 15,405.89

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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.