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Finding the Fourth Proportional to 28,283.25, 42,433.74 and 11,651.12

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Solution

The fourth proportional to 28,283.25, 42,433.74 and 11,651.12 is: 17,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.25 : 42,433.74 = 11,651.12 : x
  2. Step 2: Convert to fraction form
    28,283.25/42,433.74 = 11,651.12/x
  3. Step 3: Cross multiply
    28,283.25x = 42,433.74 × 11,651.12
  4. Step 4: Simplify right side
    28,283.25x = 494,400,596.79
  5. Step 5: Solve for x
    x = 494,400,596.79/28,283.25
  6. Step 6: Final answer
    x = 17,480.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.