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Finding the Fourth Proportional to 30,906.73, 42,651.07 and 16,759.57

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Solution

The fourth proportional to 30,906.73, 42,651.07 and 16,759.57 is: 23,128.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.73 : 42,651.07 = 16,759.57 : x
  2. Step 2: Convert to fraction form
    30,906.73/42,651.07 = 16,759.57/x
  3. Step 3: Cross multiply
    30,906.73x = 42,651.07 × 16,759.57
  4. Step 4: Simplify right side
    30,906.73x = 714,813,593.24
  5. Step 5: Solve for x
    x = 714,813,593.24/30,906.73
  6. Step 6: Final answer
    x = 23,128.09

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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.