Home / 21,976.56-30,327.68-13,028.44

Finding the Fourth Proportional to 21,976.56, 30,327.68 and 13,028.44

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Solution

The fourth proportional to 21,976.56, 30,327.68 and 13,028.44 is: 17,979.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976.56 : 30,327.68 = 13,028.44 : x
  2. Step 2: Convert to fraction form
    21,976.56/30,327.68 = 13,028.44/x
  3. Step 3: Cross multiply
    21,976.56x = 30,327.68 × 13,028.44
  4. Step 4: Simplify right side
    21,976.56x = 395,122,359.22
  5. Step 5: Solve for x
    x = 395,122,359.22/21,976.56
  6. Step 6: Final answer
    x = 17,979.26

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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.