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Finding the Fourth Proportional to 11,160.65, 15,400.56 and 6,446.45

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Solution

The fourth proportional to 11,160.65, 15,400.56 and 6,446.45 is: 8,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.65 : 15,400.56 = 6,446.45 : x
  2. Step 2: Convert to fraction form
    11,160.65/15,400.56 = 6,446.45/x
  3. Step 3: Cross multiply
    11,160.65x = 15,400.56 × 6,446.45
  4. Step 4: Simplify right side
    11,160.65x = 99,278,940.01
  5. Step 5: Solve for x
    x = 99,278,940.01/11,160.65
  6. Step 6: Final answer
    x = 8,895.44

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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.