Finding the Fourth Proportional to 19,932,382.20, 29,879,910.90 and 15,612,036.60
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Solution
The fourth proportional to 19,932,382.20, 29,879,910.90 and 15,612,036.60 is: 23,403,437.58
Step by Step Solution
- Step 1: Write the proportion equation
19,932,382.20 : 29,879,910.90 = 15,612,036.60 : x - Step 2: Convert to fraction form
19,932,382.20/29,879,910.90 = 15,612,036.60/x - Step 3: Cross multiply
19,932,382.20x = 29,879,910.90 × 15,612,036.60 - Step 4: Simplify right side
19,932,382.20x = 466,486,262,575,538.88 - Step 5: Solve for x
x = 466,486,262,575,538.88/19,932,382.20 - Step 6: Final answer
x = 23,403,437.58
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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.