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Finding the Fourth Proportional to 13,356.96, 18,436.32 and 7,769.04

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Solution

The fourth proportional to 13,356.96, 18,436.32 and 7,769.04 is: 10,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.96 : 18,436.32 = 7,769.04 : x
  2. Step 2: Convert to fraction form
    13,356.96/18,436.32 = 7,769.04/x
  3. Step 3: Cross multiply
    13,356.96x = 18,436.32 × 7,769.04
  4. Step 4: Simplify right side
    13,356.96x = 143,232,507.53
  5. Step 5: Solve for x
    x = 143,232,507.53/13,356.96
  6. Step 6: Final answer
    x = 10,723.44

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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.