Home / 13,513,196.20-18,647,980.30-7,318,192.60

Finding the Fourth Proportional to 13,513,196.20, 18,647,980.30 and 7,318,192.60

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Solution

The fourth proportional to 13,513,196.20, 18,647,980.30 and 7,318,192.60 is: 10,098,980.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513,196.20 : 18,647,980.30 = 7,318,192.60 : x
  2. Step 2: Convert to fraction form
    13,513,196.20/18,647,980.30 = 7,318,192.60/x
  3. Step 3: Cross multiply
    13,513,196.20x = 18,647,980.30 × 7,318,192.60
  4. Step 4: Simplify right side
    13,513,196.20x = 136,469,511,436,405.78
  5. Step 5: Solve for x
    x = 136,469,511,436,405.78/13,513,196.20
  6. Step 6: Final answer
    x = 10,098,980.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.