Finding the Fourth Proportional to 19,990,712.83, 27,588,249.36 and 11,170,378.21
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Solution
The fourth proportional to 19,990,712.83, 27,588,249.36 and 11,170,378.21 is: 15,415,717.39
Step by Step Solution
- Step 1: Write the proportion equation
19,990,712.83 : 27,588,249.36 = 11,170,378.21 : x - Step 2: Convert to fraction form
19,990,712.83/27,588,249.36 = 11,170,378.21/x - Step 3: Cross multiply
19,990,712.83x = 27,588,249.36 × 11,170,378.21 - Step 4: Simplify right side
19,990,712.83x = 308,171,179,323,160.25 - Step 5: Solve for x
x = 308,171,179,323,160.25/19,990,712.83 - Step 6: Final answer
x = 15,415,717.39
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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.