Home / 21,248.73-31,859.41-18,288.07

Finding the Fourth Proportional to 21,248.73, 31,859.41 and 18,288.07

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Solution

The fourth proportional to 21,248.73, 31,859.41 and 18,288.07 is: 27,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.73 : 31,859.41 = 18,288.07 : x
  2. Step 2: Convert to fraction form
    21,248.73/31,859.41 = 18,288.07/x
  3. Step 3: Cross multiply
    21,248.73x = 31,859.41 × 18,288.07
  4. Step 4: Simplify right side
    21,248.73x = 582,647,028.80
  5. Step 5: Solve for x
    x = 582,647,028.80/21,248.73
  6. Step 6: Final answer
    x = 27,420.33

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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.