Finding the Fourth Proportional to 18,390,615.60, 27,588,213.54 and 6,259,146.78
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Solution
The fourth proportional to 18,390,615.60, 27,588,213.54 and 6,259,146.78 is: 9,389,499.61
Step by Step Solution
- Step 1: Write the proportion equation
18,390,615.60 : 27,588,213.54 = 6,259,146.78 : x - Step 2: Convert to fraction form
18,390,615.60/27,588,213.54 = 6,259,146.78/x - Step 3: Cross multiply
18,390,615.60x = 27,588,213.54 × 6,259,146.78 - Step 4: Simplify right side
18,390,615.60x = 172,678,677,944,843.41 - Step 5: Solve for x
x = 172,678,677,944,843.41/18,390,615.60 - Step 6: Final answer
x = 9,389,499.61
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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.