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Finding the Fourth Proportional to 13,596.84, 18,774.78 and 11,079.36

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Solution

The fourth proportional to 13,596.84, 18,774.78 and 11,079.36 is: 15,298.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.84 : 18,774.78 = 11,079.36 : x
  2. Step 2: Convert to fraction form
    13,596.84/18,774.78 = 11,079.36/x
  3. Step 3: Cross multiply
    13,596.84x = 18,774.78 × 11,079.36
  4. Step 4: Simplify right side
    13,596.84x = 208,012,546.54
  5. Step 5: Solve for x
    x = 208,012,546.54/13,596.84
  6. Step 6: Final answer
    x = 15,298.59

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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.