Finding the Fourth Proportional to 20,462,934.26, 28,239,517.64 and 11,170,999.80
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Solution
The fourth proportional to 20,462,934.26, 28,239,517.64 and 11,170,999.80 is: 15,416,344.59
Step by Step Solution
- Step 1: Write the proportion equation
20,462,934.26 : 28,239,517.64 = 11,170,999.80 : x - Step 2: Convert to fraction form
20,462,934.26/28,239,517.64 = 11,170,999.80/x - Step 3: Cross multiply
20,462,934.26x = 28,239,517.64 × 11,170,999.80 - Step 4: Simplify right side
20,462,934.26x = 315,463,645,936,464 - Step 5: Solve for x
x = 315,463,645,936,464/20,462,934.26 - Step 6: Final answer
x = 15,416,344.59
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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.