Finding the Fourth Proportional to 18,579,653.49, 27,878,610.56 and 8,351,739.75
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Solution
The fourth proportional to 18,579,653.49, 27,878,610.56 and 8,351,739.75 is: 12,531,713.80
Step by Step Solution
- Step 1: Write the proportion equation
18,579,653.49 : 27,878,610.56 = 8,351,739.75 : x - Step 2: Convert to fraction form
18,579,653.49/27,878,610.56 = 8,351,739.75/x - Step 3: Cross multiply
18,579,653.49x = 27,878,610.56 × 8,351,739.75 - Step 4: Simplify right side
18,579,653.49x = 232,834,899,988,721.75 - Step 5: Solve for x
x = 232,834,899,988,721.75/18,579,653.49 - Step 6: Final answer
x = 12,531,713.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.