Finding the Fourth Proportional to 13,181,398.17, 18,192,239.19 and 7,380,553.74
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Solution
The fourth proportional to 13,181,398.17, 18,192,239.19 and 7,380,553.74 is: 10,186,233.45
Step by Step Solution
- Step 1: Write the proportion equation
13,181,398.17 : 18,192,239.19 = 7,380,553.74 : x - Step 2: Convert to fraction form
13,181,398.17/18,192,239.19 = 7,380,553.74/x - Step 3: Cross multiply
13,181,398.17x = 18,192,239.19 × 7,380,553.74 - Step 4: Simplify right side
13,181,398.17x = 134,268,798,992,729.08 - Step 5: Solve for x
x = 134,268,798,992,729.08/13,181,398.17 - Step 6: Final answer
x = 10,186,233.45
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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.