Finding the Fourth Proportional to 10,980,481.70, 16,470,722.55 and 8,146,129.70
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Solution
The fourth proportional to 10,980,481.70, 16,470,722.55 and 8,146,129.70 is: 12,219,194.55
Step by Step Solution
- Step 1: Write the proportion equation
10,980,481.70 : 16,470,722.55 = 8,146,129.70 : x - Step 2: Convert to fraction form
10,980,481.70/16,470,722.55 = 8,146,129.70/x - Step 3: Cross multiply
10,980,481.70x = 16,470,722.55 × 8,146,129.70 - Step 4: Simplify right side
10,980,481.70x = 134,172,642,145,014.75 - Step 5: Solve for x
x = 134,172,642,145,014.75/10,980,481.70 - Step 6: Final answer
x = 12,219,194.55
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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.