Home / 12,456,846.80-18,647,945.40-7,405,557.20

Finding the Fourth Proportional to 12,456,846.80, 18,647,945.40 and 7,405,557.20

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Solution

The fourth proportional to 12,456,846.80, 18,647,945.40 and 7,405,557.20 is: 11,086,146.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,846.80 : 18,647,945.40 = 7,405,557.20 : x
  2. Step 2: Convert to fraction form
    12,456,846.80/18,647,945.40 = 7,405,557.20/x
  3. Step 3: Cross multiply
    12,456,846.80x = 18,647,945.40 × 7,405,557.20
  4. Step 4: Simplify right side
    12,456,846.80x = 138,098,426,322,176.88
  5. Step 5: Solve for x
    x = 138,098,426,322,176.88/12,456,846.80
  6. Step 6: Final answer
    x = 11,086,146.32

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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.