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Finding the Fourth Proportional to 33,621, 46,397.16 and 18,717

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Solution

The fourth proportional to 33,621, 46,397.16 and 18,717 is: 25,829.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,621 : 46,397.16 = 18,717 : x
  2. Step 2: Convert to fraction form
    33,621/46,397.16 = 18,717/x
  3. Step 3: Cross multiply
    33,621x = 46,397.16 × 18,717
  4. Step 4: Simplify right side
    33,621x = 868,415,643.72
  5. Step 5: Solve for x
    x = 868,415,643.72/33,621
  6. Step 6: Final answer
    x = 25,829.56

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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.