Finding the Fourth Proportional to 12,310,376.21, 16,990,428.68 and 7,156,727.11
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Solution
The fourth proportional to 12,310,376.21, 16,990,428.68 and 7,156,727.11 is: 9,877,509.79
Step by Step Solution
- Step 1: Write the proportion equation
12,310,376.21 : 16,990,428.68 = 7,156,727.11 : x - Step 2: Convert to fraction form
12,310,376.21/16,990,428.68 = 7,156,727.11/x - Step 3: Cross multiply
12,310,376.21x = 16,990,428.68 × 7,156,727.11 - Step 4: Simplify right side
12,310,376.21x = 121,595,861,544,677.52 - Step 5: Solve for x
x = 121,595,861,544,677.52/12,310,376.21 - Step 6: Final answer
x = 9,877,509.79
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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.