Finding the Fourth Proportional to 20,771,645.92, 31,158,431.12 and 6,395,357.68
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Solution
The fourth proportional to 20,771,645.92, 31,158,431.12 and 6,395,357.68 is: 9,593,332.78
Step by Step Solution
- Step 1: Write the proportion equation
20,771,645.92 : 31,158,431.12 = 6,395,357.68 : x - Step 2: Convert to fraction form
20,771,645.92/31,158,431.12 = 6,395,357.68/x - Step 3: Cross multiply
20,771,645.92x = 31,158,431.12 × 6,395,357.68 - Step 4: Simplify right side
20,771,645.92x = 199,269,311,760,043 - Step 5: Solve for x
x = 199,269,311,760,043/20,771,645.92 - Step 6: Final answer
x = 9,593,332.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.