Home / 12,365,912.40-18,543,619.80-5,978,122.80

Finding the Fourth Proportional to 12,365,912.40, 18,543,619.80 and 5,978,122.80

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Solution

The fourth proportional to 12,365,912.40, 18,543,619.80 and 5,978,122.80 is: 8,964,646.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365,912.40 : 18,543,619.80 = 5,978,122.80 : x
  2. Step 2: Convert to fraction form
    12,365,912.40/18,543,619.80 = 5,978,122.80/x
  3. Step 3: Cross multiply
    12,365,912.40x = 18,543,619.80 × 5,978,122.80
  4. Step 4: Simplify right side
    12,365,912.40x = 110,856,036,320,911.44
  5. Step 5: Solve for x
    x = 110,856,036,320,911.44/12,365,912.40
  6. Step 6: Final answer
    x = 8,964,646.74

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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.