Finding the Fourth Proportional to 18,947,235.96, 28,409,974.70 and 7,419,205.80
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Solution
The fourth proportional to 18,947,235.96, 28,409,974.70 and 7,419,205.80 is: 11,124,548.69
Step by Step Solution
- Step 1: Write the proportion equation
18,947,235.96 : 28,409,974.70 = 7,419,205.80 : x - Step 2: Convert to fraction form
18,947,235.96/28,409,974.70 = 7,419,205.80/x - Step 3: Cross multiply
18,947,235.96x = 28,409,974.70 × 7,419,205.80 - Step 4: Simplify right side
18,947,235.96x = 210,779,449,034,997.22 - Step 5: Solve for x
x = 210,779,449,034,997.22/18,947,235.96 - Step 6: Final answer
x = 11,124,548.69
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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.