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Finding the Fourth Proportional to 33,421, 46,121 and 19,992.82

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Solution

The fourth proportional to 33,421, 46,121 and 19,992.82 is: 27,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,421 : 46,121 = 19,992.82 : x
  2. Step 2: Convert to fraction form
    33,421/46,121 = 19,992.82/x
  3. Step 3: Cross multiply
    33,421x = 46,121 × 19,992.82
  4. Step 4: Simplify right side
    33,421x = 922,088,851.22
  5. Step 5: Solve for x
    x = 922,088,851.22/33,421
  6. Step 6: Final answer
    x = 27,590.10

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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.