Finding the Fourth Proportional to 20,157,651.44, 27,816,757.80 and 11,900,373.74
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Solution
The fourth proportional to 20,157,651.44, 27,816,757.80 and 11,900,373.74 is: 16,422,042.77
Step by Step Solution
- Step 1: Write the proportion equation
20,157,651.44 : 27,816,757.80 = 11,900,373.74 : x - Step 2: Convert to fraction form
20,157,651.44/27,816,757.80 = 11,900,373.74/x - Step 3: Cross multiply
20,157,651.44x = 27,816,757.80 × 11,900,373.74 - Step 4: Simplify right side
20,157,651.44x = 331,029,814,055,060.19 - Step 5: Solve for x
x = 331,029,814,055,060.19/20,157,651.44 - Step 6: Final answer
x = 16,422,042.77
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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.