Home / 21,910.24-30,239.60-13,956

Finding the Fourth Proportional to 21,910.24, 30,239.60 and 13,956

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Solution

The fourth proportional to 21,910.24, 30,239.60 and 13,956 is: 19,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.24 : 30,239.60 = 13,956 : x
  2. Step 2: Convert to fraction form
    21,910.24/30,239.60 = 13,956/x
  3. Step 3: Cross multiply
    21,910.24x = 30,239.60 × 13,956
  4. Step 4: Simplify right side
    21,910.24x = 422,023,857.60
  5. Step 5: Solve for x
    x = 422,023,857.60/21,910.24
  6. Step 6: Final answer
    x = 19,261.49

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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.