Finding the Fourth Proportional to 20,715,714.36, 28,589,387.40 and 11,425,101.84
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Solution
The fourth proportional to 20,715,714.36, 28,589,387.40 and 11,425,101.84 is: 15,767,578.99
Step by Step Solution
- Step 1: Write the proportion equation
20,715,714.36 : 28,589,387.40 = 11,425,101.84 : x - Step 2: Convert to fraction form
20,715,714.36/28,589,387.40 = 11,425,101.84/x - Step 3: Cross multiply
20,715,714.36x = 28,589,387.40 × 11,425,101.84 - Step 4: Simplify right side
20,715,714.36x = 326,636,662,588,212.81 - Step 5: Solve for x
x = 326,636,662,588,212.81/20,715,714.36 - Step 6: Final answer
x = 15,767,578.99
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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.