Finding the Fourth Proportional to 11,129,991.20, 16,694,986.80 and 8,260,209.80
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Solution
The fourth proportional to 11,129,991.20, 16,694,986.80 and 8,260,209.80 is: 12,390,314.70
Step by Step Solution
- Step 1: Write the proportion equation
11,129,991.20 : 16,694,986.80 = 8,260,209.80 : x - Step 2: Convert to fraction form
11,129,991.20/16,694,986.80 = 8,260,209.80/x - Step 3: Cross multiply
11,129,991.20x = 16,694,986.80 × 8,260,209.80 - Step 4: Simplify right side
11,129,991.20x = 137,904,093,576,230.64 - Step 5: Solve for x
x = 137,904,093,576,230.64/11,129,991.20 - Step 6: Final answer
x = 12,390,314.70
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1.5x scale
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.