Finding the Fourth Proportional to 15,876,757.71, 21,922,267.05 and 12,199,878.54
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Solution
The fourth proportional to 15,876,757.71, 21,922,267.05 and 12,199,878.54 is: 16,845,315.66
Step by Step Solution
- Step 1: Write the proportion equation
15,876,757.71 : 21,922,267.05 = 12,199,878.54 : x - Step 2: Convert to fraction form
15,876,757.71/21,922,267.05 = 12,199,878.54/x - Step 3: Cross multiply
15,876,757.71x = 21,922,267.05 × 12,199,878.54 - Step 4: Simplify right side
15,876,757.71x = 267,448,995,331,444.09 - Step 5: Solve for x
x = 267,448,995,331,444.09/15,876,757.71 - Step 6: Final answer
x = 16,845,315.66
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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.