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Finding the Fourth Proportional to 12,071.68, 18,108.60 and 3,306.64

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Solution

The fourth proportional to 12,071.68, 18,108.60 and 3,306.64 is: 4,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.68 : 18,108.60 = 3,306.64 : x
  2. Step 2: Convert to fraction form
    12,071.68/18,108.60 = 3,306.64/x
  3. Step 3: Cross multiply
    12,071.68x = 18,108.60 × 3,306.64
  4. Step 4: Simplify right side
    12,071.68x = 59,878,621.10
  5. Step 5: Solve for x
    x = 59,878,621.10/12,071.68
  6. Step 6: Final answer
    x = 4,960.26

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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.