Home / 21,831.73-30,114.66-13,329.97

Finding the Fourth Proportional to 21,831.73, 30,114.66 and 13,329.97

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Solution

The fourth proportional to 21,831.73, 30,114.66 and 13,329.97 is: 18,387.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.73 : 30,114.66 = 13,329.97 : x
  2. Step 2: Convert to fraction form
    21,831.73/30,114.66 = 13,329.97/x
  3. Step 3: Cross multiply
    21,831.73x = 30,114.66 × 13,329.97
  4. Step 4: Simplify right side
    21,831.73x = 401,427,514.36
  5. Step 5: Solve for x
    x = 401,427,514.36/21,831.73
  6. Step 6: Final answer
    x = 18,387.34

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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.