Home / 19,873.29-27,419.16-11,912.61

Finding the Fourth Proportional to 19,873.29, 27,419.16 and 11,912.61

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Solution

The fourth proportional to 19,873.29, 27,419.16 and 11,912.61 is: 16,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.29 : 27,419.16 = 11,912.61 : x
  2. Step 2: Convert to fraction form
    19,873.29/27,419.16 = 11,912.61/x
  3. Step 3: Cross multiply
    19,873.29x = 27,419.16 × 11,912.61
  4. Step 4: Simplify right side
    19,873.29x = 326,633,646.39
  5. Step 5: Solve for x
    x = 326,633,646.39/19,873.29
  6. Step 6: Final answer
    x = 16,435.81

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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.