Finding the Fourth Proportional to 20,657,626.20, 30,986,439.30 and 19,382,167.80
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Solution
The fourth proportional to 20,657,626.20, 30,986,439.30 and 19,382,167.80 is: 29,073,251.70
Step by Step Solution
- Step 1: Write the proportion equation
20,657,626.20 : 30,986,439.30 = 19,382,167.80 : x - Step 2: Convert to fraction form
20,657,626.20/30,986,439.30 = 19,382,167.80/x - Step 3: Cross multiply
20,657,626.20x = 30,986,439.30 × 19,382,167.80 - Step 4: Simplify right side
20,657,626.20x = 600,584,366,037,114.62 - Step 5: Solve for x
x = 600,584,366,037,114.62/20,657,626.20 - Step 6: Final answer
x = 29,073,251.70
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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.