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Finding the Fourth Proportional to 30,917.73, 42,666.25 and 16,770.59

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Solution

The fourth proportional to 30,917.73, 42,666.25 and 16,770.59 is: 23,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,917.73 : 42,666.25 = 16,770.59 : x
  2. Step 2: Convert to fraction form
    30,917.73/42,666.25 = 16,770.59/x
  3. Step 3: Cross multiply
    30,917.73x = 42,666.25 × 16,770.59
  4. Step 4: Simplify right side
    30,917.73x = 715,538,185.59
  5. Step 5: Solve for x
    x = 715,538,185.59/30,917.73
  6. Step 6: Final answer
    x = 23,143.30

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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.