Finding the Fourth Proportional to 18,720,205.26, 28,080,307.88 and 4,536,781.26
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Solution
The fourth proportional to 18,720,205.26, 28,080,307.88 and 4,536,781.26 is: 6,805,171.89
Step by Step Solution
- Step 1: Write the proportion equation
18,720,205.26 : 28,080,307.88 = 4,536,781.26 : x - Step 2: Convert to fraction form
18,720,205.26/28,080,307.88 = 4,536,781.26/x - Step 3: Cross multiply
18,720,205.26x = 28,080,307.88 × 4,536,781.26 - Step 4: Simplify right side
18,720,205.26x = 127,394,214,565,014.31 - Step 5: Solve for x
x = 127,394,214,565,014.31/18,720,205.26 - Step 6: Final answer
x = 6,805,171.89
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1.5x scale
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.