Finding the Fourth Proportional to 19,855,487.63, 27,397,589.12 and 11,151,993.47
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Solution
The fourth proportional to 19,855,487.63, 27,397,589.12 and 11,151,993.47 is: 15,388,075.11
Step by Step Solution
- Step 1: Write the proportion equation
19,855,487.63 : 27,397,589.12 = 11,151,993.47 : x - Step 2: Convert to fraction form
19,855,487.63/27,397,589.12 = 11,151,993.47/x - Step 3: Cross multiply
19,855,487.63x = 27,397,589.12 × 11,151,993.47 - Step 4: Simplify right side
19,855,487.63x = 305,537,734,904,223.06 - Step 5: Solve for x
x = 305,537,734,904,223.06/19,855,487.63 - Step 6: Final answer
x = 15,388,075.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.