Finding the Fourth Proportional to 13,320,309.14, 18,382,026.39 and 7,208,737.64
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Solution
The fourth proportional to 13,320,309.14, 18,382,026.39 and 7,208,737.64 is: 9,948,057.82
Step by Step Solution
- Step 1: Write the proportion equation
13,320,309.14 : 18,382,026.39 = 7,208,737.64 : x - Step 2: Convert to fraction form
13,320,309.14/18,382,026.39 = 7,208,737.64/x - Step 3: Cross multiply
13,320,309.14x = 18,382,026.39 × 7,208,737.64 - Step 4: Simplify right side
13,320,309.14x = 132,511,205,537,066.31 - Step 5: Solve for x
x = 132,511,205,537,066.31/13,320,309.14 - Step 6: Final answer
x = 9,948,057.82
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1.5x scale
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.