Home / 20,080.64-27,709.72-11,127.94

Finding the Fourth Proportional to 20,080.64, 27,709.72 and 11,127.94

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Solution

The fourth proportional to 20,080.64, 27,709.72 and 11,127.94 is: 15,355.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.64 : 27,709.72 = 11,127.94 : x
  2. Step 2: Convert to fraction form
    20,080.64/27,709.72 = 11,127.94/x
  3. Step 3: Cross multiply
    20,080.64x = 27,709.72 × 11,127.94
  4. Step 4: Simplify right side
    20,080.64x = 308,352,101.58
  5. Step 5: Solve for x
    x = 308,352,101.58/20,080.64
  6. Step 6: Final answer
    x = 15,355.69

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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.