Finding the Fourth Proportional to 18,521,861.99, 27,772,024.07 and 7,008,217.21
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Solution
The fourth proportional to 18,521,861.99, 27,772,024.07 and 7,008,217.21 is: 10,508,251.12
Step by Step Solution
- Step 1: Write the proportion equation
18,521,861.99 : 27,772,024.07 = 7,008,217.21 : x - Step 2: Convert to fraction form
18,521,861.99/27,772,024.07 = 7,008,217.21/x - Step 3: Cross multiply
18,521,861.99x = 27,772,024.07 × 7,008,217.21 - Step 4: Simplify right side
18,521,861.99x = 194,632,377,056,722.59 - Step 5: Solve for x
x = 194,632,377,056,722.59/18,521,861.99 - Step 6: Final answer
x = 10,508,251.12
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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.