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Finding the Fourth Proportional to 30,391.93, 41,940.92 and 16,963.18

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Solution

The fourth proportional to 30,391.93, 41,940.92 and 16,963.18 is: 23,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.93 : 41,940.92 = 16,963.18 : x
  2. Step 2: Convert to fraction form
    30,391.93/41,940.92 = 16,963.18/x
  3. Step 3: Cross multiply
    30,391.93x = 41,940.92 × 16,963.18
  4. Step 4: Simplify right side
    30,391.93x = 711,451,185.66
  5. Step 5: Solve for x
    x = 711,451,185.66/30,391.93
  6. Step 6: Final answer
    x = 23,409.22

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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.