Finding the Fourth Proportional to 18,497,986.20, 27,746,979.30 and 17,616,187.80
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Solution
The fourth proportional to 18,497,986.20, 27,746,979.30 and 17,616,187.80 is: 26,424,281.70
Step by Step Solution
- Step 1: Write the proportion equation
18,497,986.20 : 27,746,979.30 = 17,616,187.80 : x - Step 2: Convert to fraction form
18,497,986.20/27,746,979.30 = 17,616,187.80/x - Step 3: Cross multiply
18,497,986.20x = 27,746,979.30 × 17,616,187.80 - Step 4: Simplify right side
18,497,986.20x = 488,795,998,231,512.56 - Step 5: Solve for x
x = 488,795,998,231,512.56/18,497,986.20 - Step 6: Final answer
x = 26,424,281.70
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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.