Home / 21,664.13-29,896.49-11,728.13

Finding the Fourth Proportional to 21,664.13, 29,896.49 and 11,728.13

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Solution

The fourth proportional to 21,664.13, 29,896.49 and 11,728.13 is: 16,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.13 : 29,896.49 = 11,728.13 : x
  2. Step 2: Convert to fraction form
    21,664.13/29,896.49 = 11,728.13/x
  3. Step 3: Cross multiply
    21,664.13x = 29,896.49 × 11,728.13
  4. Step 4: Simplify right side
    21,664.13x = 350,629,801.10
  5. Step 5: Solve for x
    x = 350,629,801.10/21,664.13
  6. Step 6: Final answer
    x = 16,184.81

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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.