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Finding the Fourth Proportional to 30,940.32, 42,697.69 and 16,793.17

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Solution

The fourth proportional to 30,940.32, 42,697.69 and 16,793.17 is: 23,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,940.32 : 42,697.69 = 16,793.17 : x
  2. Step 2: Convert to fraction form
    30,940.32/42,697.69 = 16,793.17/x
  3. Step 3: Cross multiply
    30,940.32x = 42,697.69 × 16,793.17
  4. Step 4: Simplify right side
    30,940.32x = 717,029,566.78
  5. Step 5: Solve for x
    x = 717,029,566.78/30,940.32
  6. Step 6: Final answer
    x = 23,174.60

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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.