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Finding the Fourth Proportional to 12,440.94, 18,647.61 and 5,043.21

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Solution

The fourth proportional to 12,440.94, 18,647.61 and 5,043.21 is: 7,559.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.94 : 18,647.61 = 5,043.21 : x
  2. Step 2: Convert to fraction form
    12,440.94/18,647.61 = 5,043.21/x
  3. Step 3: Cross multiply
    12,440.94x = 18,647.61 × 5,043.21
  4. Step 4: Simplify right side
    12,440.94x = 94,043,813.23
  5. Step 5: Solve for x
    x = 94,043,813.23/12,440.94
  6. Step 6: Final answer
    x = 7,559.22

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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.