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Finding the Fourth Proportional to 28,007.52, 38,635.68 and 16,668.96

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Solution

The fourth proportional to 28,007.52, 38,635.68 and 16,668.96 is: 22,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.52 : 38,635.68 = 16,668.96 : x
  2. Step 2: Convert to fraction form
    28,007.52/38,635.68 = 16,668.96/x
  3. Step 3: Cross multiply
    28,007.52x = 38,635.68 × 16,668.96
  4. Step 4: Simplify right side
    28,007.52x = 644,016,604.49
  5. Step 5: Solve for x
    x = 644,016,604.49/28,007.52
  6. Step 6: Final answer
    x = 22,994.42

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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.