Finding the Fourth Proportional to 13,561,400.47, 18,719,643.51 and 8,979,198.07
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Solution
The fourth proportional to 13,561,400.47, 18,719,643.51 and 8,979,198.07 is: 12,394,544.89
Step by Step Solution
- Step 1: Write the proportion equation
13,561,400.47 : 18,719,643.51 = 8,979,198.07 : x - Step 2: Convert to fraction form
13,561,400.47/18,719,643.51 = 8,979,198.07/x - Step 3: Cross multiply
13,561,400.47x = 18,719,643.51 × 8,979,198.07 - Step 4: Simplify right side
13,561,400.47x = 168,087,386,876,080.03 - Step 5: Solve for x
x = 168,087,386,876,080.03/13,561,400.47 - Step 6: Final answer
x = 12,394,544.89
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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.