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Finding the Fourth Proportional to 16,465.15, 22,721.68 and 9,391.69

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Solution

The fourth proportional to 16,465.15, 22,721.68 and 9,391.69 is: 12,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,465.15 : 22,721.68 = 9,391.69 : x
  2. Step 2: Convert to fraction form
    16,465.15/22,721.68 = 9,391.69/x
  3. Step 3: Cross multiply
    16,465.15x = 22,721.68 × 9,391.69
  4. Step 4: Simplify right side
    16,465.15x = 213,394,974.84
  5. Step 5: Solve for x
    x = 213,394,974.84/16,465.15
  6. Step 6: Final answer
    x = 12,960.40

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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.