Finding the Fourth Proportional to 20,639,722.62, 28,482,835.44 and 11,347,450.77
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Solution
The fourth proportional to 20,639,722.62, 28,482,835.44 and 11,347,450.77 is: 15,659,492.08
Step by Step Solution
- Step 1: Write the proportion equation
20,639,722.62 : 28,482,835.44 = 11,347,450.77 : x - Step 2: Convert to fraction form
20,639,722.62/28,482,835.44 = 11,347,450.77/x - Step 3: Cross multiply
20,639,722.62x = 28,482,835.44 × 11,347,450.77 - Step 4: Simplify right side
20,639,722.62x = 323,207,572,945,411.31 - Step 5: Solve for x
x = 323,207,572,945,411.31/20,639,722.62 - Step 6: Final answer
x = 15,659,492.08
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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.