Finding the Fourth Proportional to 18,980,309.40, 28,471,251.36 and 5,517,137.40
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Solution
The fourth proportional to 18,980,309.40, 28,471,251.36 and 5,517,137.40 is: 8,275,934.94
Step by Step Solution
- Step 1: Write the proportion equation
18,980,309.40 : 28,471,251.36 = 5,517,137.40 : x - Step 2: Convert to fraction form
18,980,309.40/28,471,251.36 = 5,517,137.40/x - Step 3: Cross multiply
18,980,309.40x = 28,471,251.36 × 5,517,137.40 - Step 4: Simplify right side
18,980,309.40x = 157,079,805,703,056.88 - Step 5: Solve for x
x = 157,079,805,703,056.88/18,980,309.40 - Step 6: Final answer
x = 8,275,934.94
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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.