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Finding the Fourth Proportional to 30,368.25, 41,906.97 and 16,939.40

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Solution

The fourth proportional to 30,368.25, 41,906.97 and 16,939.40 is: 23,375.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.25 : 41,906.97 = 16,939.40 : x
  2. Step 2: Convert to fraction form
    30,368.25/41,906.97 = 16,939.40/x
  3. Step 3: Cross multiply
    30,368.25x = 41,906.97 × 16,939.40
  4. Step 4: Simplify right side
    30,368.25x = 709,878,718.08
  5. Step 5: Solve for x
    x = 709,878,718.08/30,368.25
  6. Step 6: Final answer
    x = 23,375.69

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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.