Finding the Fourth Proportional to 28,515,830.22, 39,351,809.16 and 15,463,067.22
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Solution
The fourth proportional to 28,515,830.22, 39,351,809.16 and 15,463,067.22 is: 21,339,012.95
Step by Step Solution
- Step 1: Write the proportion equation
28,515,830.22 : 39,351,809.16 = 15,463,067.22 : x - Step 2: Convert to fraction form
28,515,830.22/39,351,809.16 = 15,463,067.22/x - Step 3: Cross multiply
28,515,830.22x = 39,351,809.16 × 15,463,067.22 - Step 4: Simplify right side
28,515,830.22x = 608,499,670,269,691.75 - Step 5: Solve for x
x = 608,499,670,269,691.75/28,515,830.22 - Step 6: Final answer
x = 21,339,012.95
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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.