Finding the Fourth Proportional to 14,990,738.99, 20,687,286.92 and 8,115,221.05
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Solution
The fourth proportional to 14,990,738.99, 20,687,286.92 and 8,115,221.05 is: 11,199,041.38
Step by Step Solution
- Step 1: Write the proportion equation
14,990,738.99 : 20,687,286.92 = 8,115,221.05 : x - Step 2: Convert to fraction form
14,990,738.99/20,687,286.92 = 8,115,221.05/x - Step 3: Cross multiply
14,990,738.99x = 20,687,286.92 × 8,115,221.05 - Step 4: Simplify right side
14,990,738.99x = 167,881,906,188,279.34 - Step 5: Solve for x
x = 167,881,906,188,279.34/14,990,738.99 - Step 6: Final answer
x = 11,199,041.38
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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.