Home / 21,479.36-29,635.44-13,926

Finding the Fourth Proportional to 21,479.36, 29,635.44 and 13,926

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Solution

The fourth proportional to 21,479.36, 29,635.44 and 13,926 is: 19,213.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.36 : 29,635.44 = 13,926 : x
  2. Step 2: Convert to fraction form
    21,479.36/29,635.44 = 13,926/x
  3. Step 3: Cross multiply
    21,479.36x = 29,635.44 × 13,926
  4. Step 4: Simplify right side
    21,479.36x = 412,703,137.44
  5. Step 5: Solve for x
    x = 412,703,137.44/21,479.36
  6. Step 6: Final answer
    x = 19,213.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.