Finding the Fourth Proportional to 18,489,278.42, 27,711,202.89 and 10,385,218.70
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Solution
The fourth proportional to 18,489,278.42, 27,711,202.89 and 10,385,218.70 is: 15,565,069.43
Step by Step Solution
- Step 1: Write the proportion equation
18,489,278.42 : 27,711,202.89 = 10,385,218.70 : x - Step 2: Convert to fraction form
18,489,278.42/27,711,202.89 = 10,385,218.70/x - Step 3: Cross multiply
18,489,278.42x = 27,711,202.89 × 10,385,218.70 - Step 4: Simplify right side
18,489,278.42x = 287,786,902,314,166.06 - Step 5: Solve for x
x = 287,786,902,314,166.06/18,489,278.42 - Step 6: Final answer
x = 15,565,069.43
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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.