Home / 13,072.28-19,608.40-3,211.60

Finding the Fourth Proportional to 13,072.28, 19,608.40 and 3,211.60

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Solution

The fourth proportional to 13,072.28, 19,608.40 and 3,211.60 is: 4,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.28 : 19,608.40 = 3,211.60 : x
  2. Step 2: Convert to fraction form
    13,072.28/19,608.40 = 3,211.60/x
  3. Step 3: Cross multiply
    13,072.28x = 19,608.40 × 3,211.60
  4. Step 4: Simplify right side
    13,072.28x = 62,974,337.44
  5. Step 5: Solve for x
    x = 62,974,337.44/13,072.28
  6. Step 6: Final answer
    x = 4,817.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.