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Finding the Fourth Proportional to 12,290.70, 18,436.02 and 3,056.70

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Solution

The fourth proportional to 12,290.70, 18,436.02 and 3,056.70 is: 4,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.70 : 18,436.02 = 3,056.70 : x
  2. Step 2: Convert to fraction form
    12,290.70/18,436.02 = 3,056.70/x
  3. Step 3: Cross multiply
    12,290.70x = 18,436.02 × 3,056.70
  4. Step 4: Simplify right side
    12,290.70x = 56,353,382.33
  5. Step 5: Solve for x
    x = 56,353,382.33/12,290.70
  6. Step 6: Final answer
    x = 4,585.04

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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.