Finding the Fourth Proportional to 18,918,862.80, 28,382,279.40 and 6,138,367.44
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Solution
The fourth proportional to 18,918,862.80, 28,382,279.40 and 6,138,367.44 is: 9,208,844.19
Step by Step Solution
- Step 1: Write the proportion equation
18,918,862.80 : 28,382,279.40 = 6,138,367.44 : x - Step 2: Convert to fraction form
18,918,862.80/28,382,279.40 = 6,138,367.44/x - Step 3: Cross multiply
18,918,862.80x = 28,382,279.40 × 6,138,367.44 - Step 4: Simplify right side
18,918,862.80x = 174,220,859,741,942.75 - Step 5: Solve for x
x = 174,220,859,741,942.75/18,918,862.80 - Step 6: Final answer
x = 9,208,844.19
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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.