Finding the Fourth Proportional to 11,129,990.70, 16,694,986.05 and 8,260,209.30
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Solution
The fourth proportional to 11,129,990.70, 16,694,986.05 and 8,260,209.30 is: 12,390,313.95
Step by Step Solution
- Step 1: Write the proportion equation
11,129,990.70 : 16,694,986.05 = 8,260,209.30 : x - Step 2: Convert to fraction form
11,129,990.70/16,694,986.05 = 8,260,209.30/x - Step 3: Cross multiply
11,129,990.70x = 16,694,986.05 × 8,260,209.30 - Step 4: Simplify right side
11,129,990.70x = 137,904,079,033,580.27 - Step 5: Solve for x
x = 137,904,079,033,580.27/11,129,990.70 - Step 6: Final answer
x = 12,390,313.95
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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.