Home / 13,728.04-18,947.46-8,137.96

Finding the Fourth Proportional to 13,728.04, 18,947.46 and 8,137.96

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Solution

The fourth proportional to 13,728.04, 18,947.46 and 8,137.96 is: 11,232.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.04 : 18,947.46 = 8,137.96 : x
  2. Step 2: Convert to fraction form
    13,728.04/18,947.46 = 8,137.96/x
  3. Step 3: Cross multiply
    13,728.04x = 18,947.46 × 8,137.96
  4. Step 4: Simplify right side
    13,728.04x = 154,193,671.58
  5. Step 5: Solve for x
    x = 154,193,671.58/13,728.04
  6. Step 6: Final answer
    x = 11,232.02

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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.