Finding the Fourth Proportional to 13,291,211.60, 19,936,817.40 and 13,207,230.80
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Solution
The fourth proportional to 13,291,211.60, 19,936,817.40 and 13,207,230.80 is: 19,810,846.20
Step by Step Solution
- Step 1: Write the proportion equation
13,291,211.60 : 19,936,817.40 = 13,207,230.80 : x - Step 2: Convert to fraction form
13,291,211.60/19,936,817.40 = 13,207,230.80/x - Step 3: Cross multiply
13,291,211.60x = 19,936,817.40 × 13,207,230.80 - Step 4: Simplify right side
13,291,211.60x = 263,310,148,819,255.91 - Step 5: Solve for x
x = 263,310,148,819,255.91/13,291,211.60 - Step 6: Final answer
x = 19,810,846.20
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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.