Home / 12,127,940.70-18,191,911.05-7,823,268.60

Finding the Fourth Proportional to 12,127,940.70, 18,191,911.05 and 7,823,268.60

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Solution

The fourth proportional to 12,127,940.70, 18,191,911.05 and 7,823,268.60 is: 11,734,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,940.70 : 18,191,911.05 = 7,823,268.60 : x
  2. Step 2: Convert to fraction form
    12,127,940.70/18,191,911.05 = 7,823,268.60/x
  3. Step 3: Cross multiply
    12,127,940.70x = 18,191,911.05 × 7,823,268.60
  4. Step 4: Simplify right side
    12,127,940.70x = 142,320,206,491,458.03
  5. Step 5: Solve for x
    x = 142,320,206,491,458.03/12,127,940.70
  6. Step 6: Final answer
    x = 11,734,902.90

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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.