Finding the Fourth Proportional to 13,257,979.42, 19,887,809.69 and 4,160,436.08
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Solution
The fourth proportional to 13,257,979.42, 19,887,809.69 and 4,160,436.08 is: 6,240,917.89
Step by Step Solution
- Step 1: Write the proportion equation
13,257,979.42 : 19,887,809.69 = 4,160,436.08 : x - Step 2: Convert to fraction form
13,257,979.42/19,887,809.69 = 4,160,436.08/x - Step 3: Cross multiply
13,257,979.42x = 19,887,809.69 × 4,160,436.08 - Step 4: Simplify right side
13,257,979.42x = 82,741,960,986,449.62 - Step 5: Solve for x
x = 82,741,960,986,449.62/13,257,979.42 - Step 6: Final answer
x = 6,240,917.89
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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.