Finding the Fourth Proportional to 13,752,619.90, 18,979,127.65 and 8,246,891.14
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Solution
The fourth proportional to 13,752,619.90, 18,979,127.65 and 8,246,891.14 is: 11,381,016.91
Step by Step Solution
- Step 1: Write the proportion equation
13,752,619.90 : 18,979,127.65 = 8,246,891.14 : x - Step 2: Convert to fraction form
13,752,619.90/18,979,127.65 = 8,246,891.14/x - Step 3: Cross multiply
13,752,619.90x = 18,979,127.65 × 8,246,891.14 - Step 4: Simplify right side
13,752,619.90x = 156,518,799,661,714 - Step 5: Solve for x
x = 156,518,799,661,714/13,752,619.90 - Step 6: Final answer
x = 11,381,016.91
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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.