Home / 21,396.36-29,527.20-11,965.44

Finding the Fourth Proportional to 21,396.36, 29,527.20 and 11,965.44

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Solution

The fourth proportional to 21,396.36, 29,527.20 and 11,965.44 is: 16,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.36 : 29,527.20 = 11,965.44 : x
  2. Step 2: Convert to fraction form
    21,396.36/29,527.20 = 11,965.44/x
  3. Step 3: Cross multiply
    21,396.36x = 29,527.20 × 11,965.44
  4. Step 4: Simplify right side
    21,396.36x = 353,305,939.97
  5. Step 5: Solve for x
    x = 353,305,939.97/21,396.36
  6. Step 6: Final answer
    x = 16,512.43

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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.