Home / 21,228.60-31,843.44-11,863.38

Finding the Fourth Proportional to 21,228.60, 31,843.44 and 11,863.38

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Solution

The fourth proportional to 21,228.60, 31,843.44 and 11,863.38 is: 17,795.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.60 : 31,843.44 = 11,863.38 : x
  2. Step 2: Convert to fraction form
    21,228.60/31,843.44 = 11,863.38/x
  3. Step 3: Cross multiply
    21,228.60x = 31,843.44 × 11,863.38
  4. Step 4: Simplify right side
    21,228.60x = 377,770,829.23
  5. Step 5: Solve for x
    x = 377,770,829.23/21,228.60
  6. Step 6: Final answer
    x = 17,795.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.