Finding the Fourth Proportional to 18,145,802.20, 27,218,703.30 and 16,354,211.80
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Solution
The fourth proportional to 18,145,802.20, 27,218,703.30 and 16,354,211.80 is: 24,531,317.70
Step by Step Solution
- Step 1: Write the proportion equation
18,145,802.20 : 27,218,703.30 = 16,354,211.80 : x - Step 2: Convert to fraction form
18,145,802.20/27,218,703.30 = 16,354,211.80/x - Step 3: Cross multiply
18,145,802.20x = 27,218,703.30 × 16,354,211.80 - Step 4: Simplify right side
18,145,802.20x = 445,140,438,689,559 - Step 5: Solve for x
x = 445,140,438,689,559/18,145,802.20 - Step 6: Final answer
x = 24,531,317.70
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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.