Finding the Fourth Proportional to 19,620,513.97, 29,410,986.60 and 12,339,177.32
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Solution
The fourth proportional to 19,620,513.97, 29,410,986.60 and 12,339,177.32 is: 18,496,323.77
Step by Step Solution
- Step 1: Write the proportion equation
19,620,513.97 : 29,410,986.60 = 12,339,177.32 : x - Step 2: Convert to fraction form
19,620,513.97/29,410,986.60 = 12,339,177.32/x - Step 3: Cross multiply
19,620,513.97x = 29,410,986.60 × 12,339,177.32 - Step 4: Simplify right side
19,620,513.97x = 362,907,378,887,071.38 - Step 5: Solve for x
x = 362,907,378,887,071.38/19,620,513.97 - Step 6: Final answer
x = 18,496,323.77
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.