Finding the Fourth Proportional to 19,965,855.65, 29,961,181.94 and 12,782,544.80
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Solution
The fourth proportional to 19,965,855.65, 29,961,181.94 and 12,782,544.80 is: 19,181,754.94
Step by Step Solution
- Step 1: Write the proportion equation
19,965,855.65 : 29,961,181.94 = 12,782,544.80 : x - Step 2: Convert to fraction form
19,965,855.65/29,961,181.94 = 12,782,544.80/x - Step 3: Cross multiply
19,965,855.65x = 29,961,181.94 × 12,782,544.80 - Step 4: Simplify right side
19,965,855.65x = 382,980,150,195,282.25 - Step 5: Solve for x
x = 382,980,150,195,282.25/19,965,855.65 - Step 6: Final answer
x = 19,181,754.94
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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.