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Finding the Fourth Proportional to 21,951.77, 30,293.45 and 11,880.17

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Solution

The fourth proportional to 21,951.77, 30,293.45 and 11,880.17 is: 16,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.77 : 30,293.45 = 11,880.17 : x
  2. Step 2: Convert to fraction form
    21,951.77/30,293.45 = 11,880.17/x
  3. Step 3: Cross multiply
    21,951.77x = 30,293.45 × 11,880.17
  4. Step 4: Simplify right side
    21,951.77x = 359,891,214.12
  5. Step 5: Solve for x
    x = 359,891,214.12/21,951.77
  6. Step 6: Final answer
    x = 16,394.64

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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.