Home / 21,546.72-29,719.86-13,979.53

Finding the Fourth Proportional to 21,546.72, 29,719.86 and 13,979.53

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Solution

The fourth proportional to 21,546.72, 29,719.86 and 13,979.53 is: 19,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.72 : 29,719.86 = 13,979.53 : x
  2. Step 2: Convert to fraction form
    21,546.72/29,719.86 = 13,979.53/x
  3. Step 3: Cross multiply
    21,546.72x = 29,719.86 × 13,979.53
  4. Step 4: Simplify right side
    21,546.72x = 415,469,659.19
  5. Step 5: Solve for x
    x = 415,469,659.19/21,546.72
  6. Step 6: Final answer
    x = 19,282.27

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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.