Finding the Fourth Proportional to 20,588,091.05, 28,388,268.09 and 13,135,779.20
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Solution
The fourth proportional to 20,588,091.05, 28,388,268.09 and 13,135,779.20 is: 18,112,510.80
Step by Step Solution
- Step 1: Write the proportion equation
20,588,091.05 : 28,388,268.09 = 13,135,779.20 : x - Step 2: Convert to fraction form
20,588,091.05/28,388,268.09 = 13,135,779.20/x - Step 3: Cross multiply
20,588,091.05x = 28,388,268.09 × 13,135,779.20 - Step 4: Simplify right side
20,588,091.05x = 372,902,021,358,704.38 - Step 5: Solve for x
x = 372,902,021,358,704.38/20,588,091.05 - Step 6: Final answer
x = 18,112,510.80
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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.