Home / 20,080.31-27,709.57-11,127.29

Finding the Fourth Proportional to 20,080.31, 27,709.57 and 11,127.29

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Solution

The fourth proportional to 20,080.31, 27,709.57 and 11,127.29 is: 15,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.31 : 27,709.57 = 11,127.29 : x
  2. Step 2: Convert to fraction form
    20,080.31/27,709.57 = 11,127.29/x
  3. Step 3: Cross multiply
    20,080.31x = 27,709.57 × 11,127.29
  4. Step 4: Simplify right side
    20,080.31x = 308,332,421.17
  5. Step 5: Solve for x
    x = 308,332,421.17/20,080.31
  6. Step 6: Final answer
    x = 15,354.96

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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.