Home / 20,288.16-27,996.48-11,904

Finding the Fourth Proportional to 20,288.16, 27,996.48 and 11,904

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Solution

The fourth proportional to 20,288.16, 27,996.48 and 11,904 is: 16,426.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.16 : 27,996.48 = 11,904 : x
  2. Step 2: Convert to fraction form
    20,288.16/27,996.48 = 11,904/x
  3. Step 3: Cross multiply
    20,288.16x = 27,996.48 × 11,904
  4. Step 4: Simplify right side
    20,288.16x = 333,270,097.92
  5. Step 5: Solve for x
    x = 333,270,097.92/20,288.16
  6. Step 6: Final answer
    x = 16,426.83

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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.