Finding the Fourth Proportional to 20,998,594.29, 28,977,425.60 and 11,579,380.23
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Solution
The fourth proportional to 20,998,594.29, 28,977,425.60 and 11,579,380.23 is: 15,979,194.82
Step by Step Solution
- Step 1: Write the proportion equation
20,998,594.29 : 28,977,425.60 = 11,579,380.23 : x - Step 2: Convert to fraction form
20,998,594.29/28,977,425.60 = 11,579,380.23/x - Step 3: Cross multiply
20,998,594.29x = 28,977,425.60 × 11,579,380.23 - Step 4: Simplify right side
20,998,594.29x = 335,540,629,051,039 - Step 5: Solve for x
x = 335,540,629,051,039/20,998,594.29 - Step 6: Final answer
x = 15,979,194.82
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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.