Home / 12,689,427.30-17,511,431.87-6,888,212.97

Finding the Fourth Proportional to 12,689,427.30, 17,511,431.87 and 6,888,212.97

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Solution

The fourth proportional to 12,689,427.30, 17,511,431.87 and 6,888,212.97 is: 9,505,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689,427.30 : 17,511,431.87 = 6,888,212.97 : x
  2. Step 2: Convert to fraction form
    12,689,427.30/17,511,431.87 = 6,888,212.97/x
  3. Step 3: Cross multiply
    12,689,427.30x = 17,511,431.87 × 6,888,212.97
  4. Step 4: Simplify right side
    12,689,427.30x = 120,622,472,043,011.81
  5. Step 5: Solve for x
    x = 120,622,472,043,011.81/12,689,427.30
  6. Step 6: Final answer
    x = 9,505,745.94

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1.5x scale

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.