Finding the Fourth Proportional to 18,208,172.70, 27,294,507.36 and 7,275,103.20
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Solution
The fourth proportional to 18,208,172.70, 27,294,507.36 and 7,275,103.20 is: 10,905,562.09
Step by Step Solution
- Step 1: Write the proportion equation
18,208,172.70 : 27,294,507.36 = 7,275,103.20 : x - Step 2: Convert to fraction form
18,208,172.70/27,294,507.36 = 7,275,103.20/x - Step 3: Cross multiply
18,208,172.70x = 27,294,507.36 × 7,275,103.20 - Step 4: Simplify right side
18,208,172.70x = 198,570,357,837,159.56 - Step 5: Solve for x
x = 198,570,357,837,159.56/18,208,172.70 - Step 6: Final answer
x = 10,905,562.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.