Home / 21,371.97-29,493.36-11,940.51

Finding the Fourth Proportional to 21,371.97, 29,493.36 and 11,940.51

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Solution

The fourth proportional to 21,371.97, 29,493.36 and 11,940.51 is: 16,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.97 : 29,493.36 = 11,940.51 : x
  2. Step 2: Convert to fraction form
    21,371.97/29,493.36 = 11,940.51/x
  3. Step 3: Cross multiply
    21,371.97x = 29,493.36 × 11,940.51
  4. Step 4: Simplify right side
    21,371.97x = 352,165,760.01
  5. Step 5: Solve for x
    x = 352,165,760.01/21,371.97
  6. Step 6: Final answer
    x = 16,477.93

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1.5x scale

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.