Finding the Fourth Proportional to 13,135,912.97, 18,127,451.50 and 7,175,324.66
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Solution
The fourth proportional to 13,135,912.97, 18,127,451.50 and 7,175,324.66 is: 9,901,888.81
Step by Step Solution
- Step 1: Write the proportion equation
13,135,912.97 : 18,127,451.50 = 7,175,324.66 : x - Step 2: Convert to fraction form
13,135,912.97/18,127,451.50 = 7,175,324.66/x - Step 3: Cross multiply
13,135,912.97x = 18,127,451.50 × 7,175,324.66 - Step 4: Simplify right side
13,135,912.97x = 130,070,349,662,328.42 - Step 5: Solve for x
x = 130,070,349,662,328.42/13,135,912.97 - Step 6: Final answer
x = 9,901,888.81
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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.