Finding the Fourth Proportional to 18,947,236.96, 28,409,976.19 and 7,419,206.80
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Solution
The fourth proportional to 18,947,236.96, 28,409,976.19 and 7,419,206.80 is: 11,124,550.19
Step by Step Solution
- Step 1: Write the proportion equation
18,947,236.96 : 28,409,976.19 = 7,419,206.80 : x - Step 2: Convert to fraction form
18,947,236.96/28,409,976.19 = 7,419,206.80/x - Step 3: Cross multiply
18,947,236.96x = 28,409,976.19 × 7,419,206.80 - Step 4: Simplify right side
18,947,236.96x = 210,779,488,536,686.09 - Step 5: Solve for x
x = 210,779,488,536,686.09/18,947,236.96 - Step 6: Final answer
x = 11,124,550.19
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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.