Finding the Fourth Proportional to 19,948,640.12, 29,879,657.58 and 12,248,912.96
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Solution
The fourth proportional to 19,948,640.12, 29,879,657.58 and 12,248,912.96 is: 18,346,780.67
Step by Step Solution
- Step 1: Write the proportion equation
19,948,640.12 : 29,879,657.58 = 12,248,912.96 : x - Step 2: Convert to fraction form
19,948,640.12/29,879,657.58 = 12,248,912.96/x - Step 3: Cross multiply
19,948,640.12x = 29,879,657.58 × 12,248,912.96 - Step 4: Simplify right side
19,948,640.12x = 365,993,324,972,024.25 - Step 5: Solve for x
x = 365,993,324,972,024.25/19,948,640.12 - Step 6: Final answer
x = 18,346,780.67
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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.