Finding the Fourth Proportional to 13,389,747.62, 18,479,871.53 and 8,165,786.47
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Solution
The fourth proportional to 13,389,747.62, 18,479,871.53 and 8,165,786.47 is: 11,270,017.12
Step by Step Solution
- Step 1: Write the proportion equation
13,389,747.62 : 18,479,871.53 = 8,165,786.47 : x - Step 2: Convert to fraction form
13,389,747.62/18,479,871.53 = 8,165,786.47/x - Step 3: Cross multiply
13,389,747.62x = 18,479,871.53 × 8,165,786.47 - Step 4: Simplify right side
13,389,747.62x = 150,902,684,850,605.28 - Step 5: Solve for x
x = 150,902,684,850,605.28/13,389,747.62 - Step 6: Final answer
x = 11,270,017.12
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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.