Home / 21,077.33-29,086.82-11,517.41

Finding the Fourth Proportional to 21,077.33, 29,086.82 and 11,517.41

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Solution

The fourth proportional to 21,077.33, 29,086.82 and 11,517.41 is: 15,894.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.33 : 29,086.82 = 11,517.41 : x
  2. Step 2: Convert to fraction form
    21,077.33/29,086.82 = 11,517.41/x
  3. Step 3: Cross multiply
    21,077.33x = 29,086.82 × 11,517.41
  4. Step 4: Simplify right side
    21,077.33x = 335,004,831.54
  5. Step 5: Solve for x
    x = 335,004,831.54/21,077.33
  6. Step 6: Final answer
    x = 15,894.08

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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.