Finding the Fourth Proportional to 28,539,678.36, 39,373,544.70 and 16,309,974.36
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Solution
The fourth proportional to 28,539,678.36, 39,373,544.70 and 16,309,974.36 is: 22,501,357.46
Step by Step Solution
- Step 1: Write the proportion equation
28,539,678.36 : 39,373,544.70 = 16,309,974.36 : x - Step 2: Convert to fraction form
28,539,678.36/39,373,544.70 = 16,309,974.36/x - Step 3: Cross multiply
28,539,678.36x = 39,373,544.70 × 16,309,974.36 - Step 4: Simplify right side
28,539,678.36x = 642,181,504,519,313.88 - Step 5: Solve for x
x = 642,181,504,519,313.88/28,539,678.36 - Step 6: Final answer
x = 22,501,357.46
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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.