Finding the Fourth Proportional to 21,382,643.94, 29,507,686.47 and 12,090,070.41
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Solution
The fourth proportional to 21,382,643.94, 29,507,686.47 and 12,090,070.41 is: 16,684,092.39
Step by Step Solution
- Step 1: Write the proportion equation
21,382,643.94 : 29,507,686.47 = 12,090,070.41 : x - Step 2: Convert to fraction form
21,382,643.94/29,507,686.47 = 12,090,070.41/x - Step 3: Cross multiply
21,382,643.94x = 29,507,686.47 × 12,090,070.41 - Step 4: Simplify right side
21,382,643.94x = 356,750,007,058,504.31 - Step 5: Solve for x
x = 356,750,007,058,504.31/21,382,643.94 - Step 6: Final answer
x = 16,684,092.39
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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.