Home / 21,563.36-29,754.24-12,131.36

Finding the Fourth Proportional to 21,563.36, 29,754.24 and 12,131.36

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Solution

The fourth proportional to 21,563.36, 29,754.24 and 12,131.36 is: 16,739.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.36 : 29,754.24 = 12,131.36 : x
  2. Step 2: Convert to fraction form
    21,563.36/29,754.24 = 12,131.36/x
  3. Step 3: Cross multiply
    21,563.36x = 29,754.24 × 12,131.36
  4. Step 4: Simplify right side
    21,563.36x = 360,959,396.97
  5. Step 5: Solve for x
    x = 360,959,396.97/21,563.36
  6. Step 6: Final answer
    x = 16,739.48

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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.