Finding the Fourth Proportional to 10,995,742.49, 15,120,316.09 and 9,542,915.66
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Solution
The fourth proportional to 10,995,742.49, 15,120,316.09 and 9,542,915.66 is: 13,122,524.59
Step by Step Solution
- Step 1: Write the proportion equation
10,995,742.49 : 15,120,316.09 = 9,542,915.66 : x - Step 2: Convert to fraction form
10,995,742.49/15,120,316.09 = 9,542,915.66/x - Step 3: Cross multiply
10,995,742.49x = 15,120,316.09 × 9,542,915.66 - Step 4: Simplify right side
10,995,742.49x = 144,291,901,199,410.97 - Step 5: Solve for x
x = 144,291,901,199,410.97/10,995,742.49 - Step 6: Final answer
x = 13,122,524.59
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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.