Finding the Fourth Proportional to 15,403,672.22, 21,257,851.49 and 8,528,910.62
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Solution
The fourth proportional to 15,403,672.22, 21,257,851.49 and 8,528,910.62 is: 11,770,330.65
Step by Step Solution
- Step 1: Write the proportion equation
15,403,672.22 : 21,257,851.49 = 8,528,910.62 : x - Step 2: Convert to fraction form
15,403,672.22/21,257,851.49 = 8,528,910.62/x - Step 3: Cross multiply
15,403,672.22x = 21,257,851.49 × 8,528,910.62 - Step 4: Simplify right side
15,403,672.22x = 181,306,315,182,510 - Step 5: Solve for x
x = 181,306,315,182,510/15,403,672.22 - Step 6: Final answer
x = 11,770,330.65
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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.