Finding the Fourth Proportional to 20,971,710.44, 28,939,114.50 and 11,678,578.28
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Solution
The fourth proportional to 20,971,710.44, 28,939,114.50 and 11,678,578.28 is: 16,115,410.09
Step by Step Solution
- Step 1: Write the proportion equation
20,971,710.44 : 28,939,114.50 = 11,678,578.28 : x - Step 2: Convert to fraction form
20,971,710.44/28,939,114.50 = 11,678,578.28/x - Step 3: Cross multiply
20,971,710.44x = 28,939,114.50 × 11,678,578.28 - Step 4: Simplify right side
20,971,710.44x = 337,967,714,042,133.06 - Step 5: Solve for x
x = 337,967,714,042,133.06/20,971,710.44 - Step 6: Final answer
x = 16,115,410.09
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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.