Finding the Fourth Proportional to 12,171,353.96, 16,796,869.36 and 6,664,961.21
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Solution
The fourth proportional to 12,171,353.96, 16,796,869.36 and 6,664,961.21 is: 9,197,865.99
Step by Step Solution
- Step 1: Write the proportion equation
12,171,353.96 : 16,796,869.36 = 6,664,961.21 : x - Step 2: Convert to fraction form
12,171,353.96/16,796,869.36 = 6,664,961.21/x - Step 3: Cross multiply
12,171,353.96x = 16,796,869.36 × 6,664,961.21 - Step 4: Simplify right side
12,171,353.96x = 111,950,482,633,190.78 - Step 5: Solve for x
x = 111,950,482,633,190.78/12,171,353.96 - Step 6: Final answer
x = 9,197,865.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.