Finding the Fourth Proportional to 20,759,540.24, 28,399,198.16 and 20,672,102.60
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Solution
The fourth proportional to 20,759,540.24, 28,399,198.16 and 20,672,102.60 is: 28,279,582.85
Step by Step Solution
- Step 1: Write the proportion equation
20,759,540.24 : 28,399,198.16 = 20,672,102.60 : x - Step 2: Convert to fraction form
20,759,540.24/28,399,198.16 = 20,672,102.60/x - Step 3: Cross multiply
20,759,540.24x = 28,399,198.16 × 20,672,102.60 - Step 4: Simplify right side
20,759,540.24x = 587,071,138,121,251.25 - Step 5: Solve for x
x = 587,071,138,121,251.25/20,759,540.24 - Step 6: Final answer
x = 28,279,582.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.