Finding the Fourth Proportional to 13,538,542.26, 18,683,079.30 and 7,343,573.52
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Solution
The fourth proportional to 13,538,542.26, 18,683,079.30 and 7,343,573.52 is: 10,134,072.32
Step by Step Solution
- Step 1: Write the proportion equation
13,538,542.26 : 18,683,079.30 = 7,343,573.52 : x - Step 2: Convert to fraction form
13,538,542.26/18,683,079.30 = 7,343,573.52/x - Step 3: Cross multiply
13,538,542.26x = 18,683,079.30 × 7,343,573.52 - Step 4: Simplify right side
13,538,542.26x = 137,200,566,419,540.14 - Step 5: Solve for x
x = 137,200,566,419,540.14/13,538,542.26 - Step 6: Final answer
x = 10,134,072.32
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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.