Home / 21,529.26-29,712.83-13,571.01

Finding the Fourth Proportional to 21,529.26, 29,712.83 and 13,571.01

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Solution

The fourth proportional to 21,529.26, 29,712.83 and 13,571.01 is: 18,729.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.26 : 29,712.83 = 13,571.01 : x
  2. Step 2: Convert to fraction form
    21,529.26/29,712.83 = 13,571.01/x
  3. Step 3: Cross multiply
    21,529.26x = 29,712.83 × 13,571.01
  4. Step 4: Simplify right side
    21,529.26x = 403,233,045.20
  5. Step 5: Solve for x
    x = 403,233,045.20/21,529.26
  6. Step 6: Final answer
    x = 18,729.54

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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.