Finding the Fourth Proportional to 18,901,873.80, 28,352,810.70 and 5,438,701.80
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Solution
The fourth proportional to 18,901,873.80, 28,352,810.70 and 5,438,701.80 is: 8,158,052.70
Step by Step Solution
- Step 1: Write the proportion equation
18,901,873.80 : 28,352,810.70 = 5,438,701.80 : x - Step 2: Convert to fraction form
18,901,873.80/28,352,810.70 = 5,438,701.80/x - Step 3: Cross multiply
18,901,873.80x = 28,352,810.70 × 5,438,701.80 - Step 4: Simplify right side
18,901,873.80x = 154,202,482,589,149.25 - Step 5: Solve for x
x = 154,202,482,589,149.25/18,901,873.80 - Step 6: Final answer
x = 8,158,052.70
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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.