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Finding the Fourth Proportional to 33,243, 45,878.58 and 18,339

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Solution

The fourth proportional to 33,243, 45,878.58 and 18,339 is: 25,309.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,243 : 45,878.58 = 18,339 : x
  2. Step 2: Convert to fraction form
    33,243/45,878.58 = 18,339/x
  3. Step 3: Cross multiply
    33,243x = 45,878.58 × 18,339
  4. Step 4: Simplify right side
    33,243x = 841,367,278.62
  5. Step 5: Solve for x
    x = 841,367,278.62/33,243
  6. Step 6: Final answer
    x = 25,309.61

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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.