Finding the Fourth Proportional to 13,067,640.49, 18,033,858.39 and 7,187,821.75
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Solution
The fourth proportional to 13,067,640.49, 18,033,858.39 and 7,187,821.75 is: 9,919,477.02
Step by Step Solution
- Step 1: Write the proportion equation
13,067,640.49 : 18,033,858.39 = 7,187,821.75 : x - Step 2: Convert to fraction form
13,067,640.49/18,033,858.39 = 7,187,821.75/x - Step 3: Cross multiply
13,067,640.49x = 18,033,858.39 × 7,187,821.75 - Step 4: Simplify right side
13,067,640.49x = 129,624,159,572,061.98 - Step 5: Solve for x
x = 129,624,159,572,061.98/13,067,640.49 - Step 6: Final answer
x = 9,919,477.02
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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.