Finding the Fourth Proportional to 20,968,157.22, 28,936,988.01 and 11,801,393.70
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Solution
The fourth proportional to 20,968,157.22, 28,936,988.01 and 11,801,393.70 is: 16,286,447.32
Step by Step Solution
- Step 1: Write the proportion equation
20,968,157.22 : 28,936,988.01 = 11,801,393.70 : x - Step 2: Convert to fraction form
20,968,157.22/28,936,988.01 = 11,801,393.70/x - Step 3: Cross multiply
20,968,157.22x = 28,936,988.01 × 11,801,393.70 - Step 4: Simplify right side
20,968,157.22x = 341,496,787,998,189.56 - Step 5: Solve for x
x = 341,496,787,998,189.56/20,968,157.22 - Step 6: Final answer
x = 16,286,447.32
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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.