Home / 19,889.60-27,449.86-11,933.78

Finding the Fourth Proportional to 19,889.60, 27,449.86 and 11,933.78

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Solution

The fourth proportional to 19,889.60, 27,449.86 and 11,933.78 is: 16,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.60 : 27,449.86 = 11,933.78 : x
  2. Step 2: Convert to fraction form
    19,889.60/27,449.86 = 11,933.78/x
  3. Step 3: Cross multiply
    19,889.60x = 27,449.86 × 11,933.78
  4. Step 4: Simplify right side
    19,889.60x = 327,580,590.27
  5. Step 5: Solve for x
    x = 327,580,590.27/19,889.60
  6. Step 6: Final answer
    x = 16,469.94

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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.