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Finding the Fourth Proportional to 30,994.97, 42,773.54 and 16,847.87

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Solution

The fourth proportional to 30,994.97, 42,773.54 and 16,847.87 is: 23,250.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,994.97 : 42,773.54 = 16,847.87 : x
  2. Step 2: Convert to fraction form
    30,994.97/42,773.54 = 16,847.87/x
  3. Step 3: Cross multiply
    30,994.97x = 42,773.54 × 16,847.87
  4. Step 4: Simplify right side
    30,994.97x = 720,642,743.25
  5. Step 5: Solve for x
    x = 720,642,743.25/30,994.97
  6. Step 6: Final answer
    x = 23,250.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.