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Finding the Fourth Proportional to 12,556.72, 18,821.71 and 5,968.99

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Solution

The fourth proportional to 12,556.72, 18,821.71 and 5,968.99 is: 8,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.72 : 18,821.71 = 5,968.99 : x
  2. Step 2: Convert to fraction form
    12,556.72/18,821.71 = 5,968.99/x
  3. Step 3: Cross multiply
    12,556.72x = 18,821.71 × 5,968.99
  4. Step 4: Simplify right side
    12,556.72x = 112,346,474.82
  5. Step 5: Solve for x
    x = 112,346,474.82/12,556.72
  6. Step 6: Final answer
    x = 8,947.12

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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.