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Finding the Fourth Proportional to 12,362,860.80, 18,508,861.80 and 12,008,566.80

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Solution

The fourth proportional to 12,362,860.80, 18,508,861.80 and 12,008,566.80 is: 17,978,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362,860.80 : 18,508,861.80 = 12,008,566.80 : x
  2. Step 2: Convert to fraction form
    12,362,860.80/18,508,861.80 = 12,008,566.80/x
  3. Step 3: Cross multiply
    12,362,860.80x = 18,508,861.80 × 12,008,566.80
  4. Step 4: Simplify right side
    12,362,860.80x = 222,264,903,317,268.25
  5. Step 5: Solve for x
    x = 222,264,903,317,268.25/12,362,860.80
  6. Step 6: Final answer
    x = 17,978,436.13

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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.