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Finding the Fourth Proportional to 30,699.35, 42,367.56 and 17,269.80

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Solution

The fourth proportional to 30,699.35, 42,367.56 and 17,269.80 is: 23,833.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.35 : 42,367.56 = 17,269.80 : x
  2. Step 2: Convert to fraction form
    30,699.35/42,367.56 = 17,269.80/x
  3. Step 3: Cross multiply
    30,699.35x = 42,367.56 × 17,269.80
  4. Step 4: Simplify right side
    30,699.35x = 731,679,287.69
  5. Step 5: Solve for x
    x = 731,679,287.69/30,699.35
  6. Step 6: Final answer
    x = 23,833.71

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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.