Finding the Fourth Proportional to 20,699,431.36, 30,903,604.70 and 15,816,181.12
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Solution
The fourth proportional to 20,699,431.36, 30,903,604.70 and 15,816,181.12 is: 23,613,064.57
Step by Step Solution
- Step 1: Write the proportion equation
20,699,431.36 : 30,903,604.70 = 15,816,181.12 : x - Step 2: Convert to fraction form
20,699,431.36/30,903,604.70 = 15,816,181.12/x - Step 3: Cross multiply
20,699,431.36x = 30,903,604.70 × 15,816,181.12 - Step 4: Simplify right side
20,699,431.36x = 488,777,009,196,083.25 - Step 5: Solve for x
x = 488,777,009,196,083.25/20,699,431.36 - Step 6: Final answer
x = 23,613,064.57
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.