Finding the Fourth Proportional to 21,876,643.12, 30,190,376.24 and 12,087,718.08
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Solution
The fourth proportional to 21,876,643.12, 30,190,376.24 and 12,087,718.08 is: 16,681,387.30
Step by Step Solution
- Step 1: Write the proportion equation
21,876,643.12 : 30,190,376.24 = 12,087,718.08 : x - Step 2: Convert to fraction form
21,876,643.12/30,190,376.24 = 12,087,718.08/x - Step 3: Cross multiply
21,876,643.12x = 30,190,376.24 × 12,087,718.08 - Step 4: Simplify right side
21,876,643.12x = 364,932,756,718,250.38 - Step 5: Solve for x
x = 364,932,756,718,250.38/21,876,643.12 - Step 6: Final answer
x = 16,681,387.30
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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.