Finding the Fourth Proportional to 20,785,645.30, 31,161,879.15 and 8,808,531.70
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Solution
The fourth proportional to 20,785,645.30, 31,161,879.15 and 8,808,531.70 is: 13,205,767.56
Step by Step Solution
- Step 1: Write the proportion equation
20,785,645.30 : 31,161,879.15 = 8,808,531.70 : x - Step 2: Convert to fraction form
20,785,645.30/31,161,879.15 = 8,808,531.70/x - Step 3: Cross multiply
20,785,645.30x = 31,161,879.15 × 8,808,531.70 - Step 4: Simplify right side
20,785,645.30x = 274,490,400,324,344.03 - Step 5: Solve for x
x = 274,490,400,324,344.03/20,785,645.30 - Step 6: Final answer
x = 13,205,767.56
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.