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Finding the Fourth Proportional to 33,291, 45,942.06 and 18,387

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Solution

The fourth proportional to 33,291, 45,942.06 and 18,387 is: 25,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,291 : 45,942.06 = 18,387 : x
  2. Step 2: Convert to fraction form
    33,291/45,942.06 = 18,387/x
  3. Step 3: Cross multiply
    33,291x = 45,942.06 × 18,387
  4. Step 4: Simplify right side
    33,291x = 844,736,657.22
  5. Step 5: Solve for x
    x = 844,736,657.22/33,291
  6. Step 6: Final answer
    x = 25,374.33

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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.