Finding the Fourth Proportional to 18,382,434.30, 27,573,651.45 and 12,217,718.70
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Solution
The fourth proportional to 18,382,434.30, 27,573,651.45 and 12,217,718.70 is: 18,326,578.05
Step by Step Solution
- Step 1: Write the proportion equation
18,382,434.30 : 27,573,651.45 = 12,217,718.70 : x - Step 2: Convert to fraction form
18,382,434.30/27,573,651.45 = 12,217,718.70/x - Step 3: Cross multiply
18,382,434.30x = 27,573,651.45 × 12,217,718.70 - Step 4: Simplify right side
18,382,434.30x = 336,887,116,947,947.06 - Step 5: Solve for x
x = 336,887,116,947,947.06/18,382,434.30 - Step 6: Final answer
x = 18,326,578.05
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1.5x scale
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.