Finding the Fourth Proportional to 18,901,867.80, 28,352,801.70 and 5,438,695.80
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Solution
The fourth proportional to 18,901,867.80, 28,352,801.70 and 5,438,695.80 is: 8,158,043.70
Step by Step Solution
- Step 1: Write the proportion equation
18,901,867.80 : 28,352,801.70 = 5,438,695.80 : x - Step 2: Convert to fraction form
18,901,867.80/28,352,801.70 = 5,438,695.80/x - Step 3: Cross multiply
18,901,867.80x = 28,352,801.70 × 5,438,695.80 - Step 4: Simplify right side
18,901,867.80x = 154,202,263,524,022.84 - Step 5: Solve for x
x = 154,202,263,524,022.84/18,901,867.80 - Step 6: Final answer
x = 8,158,043.70
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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.