Finding the Fourth Proportional to 12,808,390.87, 17,675,793.44 and 7,007,212.99
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Solution
The fourth proportional to 12,808,390.87, 17,675,793.44 and 7,007,212.99 is: 9,670,071.02
Step by Step Solution
- Step 1: Write the proportion equation
12,808,390.87 : 17,675,793.44 = 7,007,212.99 : x - Step 2: Convert to fraction form
12,808,390.87/17,675,793.44 = 7,007,212.99/x - Step 3: Cross multiply
12,808,390.87x = 17,675,793.44 × 7,007,212.99 - Step 4: Simplify right side
12,808,390.87x = 123,858,049,401,324.80 - Step 5: Solve for x
x = 123,858,049,401,324.80/12,808,390.87 - Step 6: Final answer
x = 9,670,071.02
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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.