Home / 20,068.91-27,693.87-11,115.88

Finding the Fourth Proportional to 20,068.91, 27,693.87 and 11,115.88

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Solution

The fourth proportional to 20,068.91, 27,693.87 and 11,115.88 is: 15,339.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.91 : 27,693.87 = 11,115.88 : x
  2. Step 2: Convert to fraction form
    20,068.91/27,693.87 = 11,115.88/x
  3. Step 3: Cross multiply
    20,068.91x = 27,693.87 × 11,115.88
  4. Step 4: Simplify right side
    20,068.91x = 307,841,735.66
  5. Step 5: Solve for x
    x = 307,841,735.66/20,068.91
  6. Step 6: Final answer
    x = 15,339.24

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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.