Finding the Fourth Proportional to 12,236,427.80, 18,354,641.70 and 10,245,771.80
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Solution
The fourth proportional to 12,236,427.80, 18,354,641.70 and 10,245,771.80 is: 15,368,657.70
Step by Step Solution
- Step 1: Write the proportion equation
12,236,427.80 : 18,354,641.70 = 10,245,771.80 : x - Step 2: Convert to fraction form
12,236,427.80/18,354,641.70 = 10,245,771.80/x - Step 3: Cross multiply
12,236,427.80x = 18,354,641.70 × 10,245,771.80 - Step 4: Simplify right side
12,236,427.80x = 188,057,470,328,964.06 - Step 5: Solve for x
x = 188,057,470,328,964.06/12,236,427.80 - Step 6: Final answer
x = 15,368,657.70
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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.