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Finding the Fourth Proportional to 30,020.70, 41,425.69 and 16,589.78

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Solution

The fourth proportional to 30,020.70, 41,425.69 and 16,589.78 is: 22,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,020.70 : 41,425.69 = 16,589.78 : x
  2. Step 2: Convert to fraction form
    30,020.70/41,425.69 = 16,589.78/x
  3. Step 3: Cross multiply
    30,020.70x = 41,425.69 × 16,589.78
  4. Step 4: Simplify right side
    30,020.70x = 687,243,083.45
  5. Step 5: Solve for x
    x = 687,243,083.45/30,020.70
  6. Step 6: Final answer
    x = 22,892.31

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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.