Finding the Fourth Proportional to 18,345,837.20, 27,508,387.80 and 6,986,656.40
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Solution
The fourth proportional to 18,345,837.20, 27,508,387.80 and 6,986,656.40 is: 10,476,036.15
Step by Step Solution
- Step 1: Write the proportion equation
18,345,837.20 : 27,508,387.80 = 6,986,656.40 : x - Step 2: Convert to fraction form
18,345,837.20/27,508,387.80 = 6,986,656.40/x - Step 3: Cross multiply
18,345,837.20x = 27,508,387.80 × 6,986,656.40 - Step 4: Simplify right side
18,345,837.20x = 192,191,653,676,551.94 - Step 5: Solve for x
x = 192,191,653,676,551.94/18,345,837.20 - Step 6: Final answer
x = 10,476,036.15
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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.