Home / 21,992.82-30,321.54-14,021.21

Finding the Fourth Proportional to 21,992.82, 30,321.54 and 14,021.21

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Solution

The fourth proportional to 21,992.82, 30,321.54 and 14,021.21 is: 19,331.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.82 : 30,321.54 = 14,021.21 : x
  2. Step 2: Convert to fraction form
    21,992.82/30,321.54 = 14,021.21/x
  3. Step 3: Cross multiply
    21,992.82x = 30,321.54 × 14,021.21
  4. Step 4: Simplify right side
    21,992.82x = 425,144,528.26
  5. Step 5: Solve for x
    x = 425,144,528.26/21,992.82
  6. Step 6: Final answer
    x = 19,331.06

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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.