Finding the Fourth Proportional to 28,957,896.12, 39,962,375.82 and 15,906,361.08
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Solution
The fourth proportional to 28,957,896.12, 39,962,375.82 and 15,906,361.08 is: 21,951,041.50
Step by Step Solution
- Step 1: Write the proportion equation
28,957,896.12 : 39,962,375.82 = 15,906,361.08 : x - Step 2: Convert to fraction form
28,957,896.12/39,962,375.82 = 15,906,361.08/x - Step 3: Cross multiply
28,957,896.12x = 39,962,375.82 × 15,906,361.08 - Step 4: Simplify right side
28,957,896.12x = 635,655,979,407,581.12 - Step 5: Solve for x
x = 635,655,979,407,581.12/28,957,896.12 - Step 6: Final answer
x = 21,951,041.50
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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.