Finding the Fourth Proportional to 20,870,692.78, 31,306,205.62 and 8,571,487.44
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Solution
The fourth proportional to 20,870,692.78, 31,306,205.62 and 8,571,487.44 is: 12,857,299.52
Step by Step Solution
- Step 1: Write the proportion equation
20,870,692.78 : 31,306,205.62 = 8,571,487.44 : x - Step 2: Convert to fraction form
20,870,692.78/31,306,205.62 = 8,571,487.44/x - Step 3: Cross multiply
20,870,692.78x = 31,306,205.62 × 8,571,487.44 - Step 4: Simplify right side
20,870,692.78x = 268,340,748,265,887.41 - Step 5: Solve for x
x = 268,340,748,265,887.41/20,870,692.78 - Step 6: Final answer
x = 12,857,299.52
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.