Finding the Fourth Proportional to 21,408,915.87, 29,537,067.56 and 12,235,024.35
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Solution
The fourth proportional to 21,408,915.87, 29,537,067.56 and 12,235,024.35 is: 16,880,198.09
Step by Step Solution
- Step 1: Write the proportion equation
21,408,915.87 : 29,537,067.56 = 12,235,024.35 : x - Step 2: Convert to fraction form
21,408,915.87/29,537,067.56 = 12,235,024.35/x - Step 3: Cross multiply
21,408,915.87x = 29,537,067.56 × 12,235,024.35 - Step 4: Simplify right side
21,408,915.87x = 361,386,740,763,019.94 - Step 5: Solve for x
x = 361,386,740,763,019.94/21,408,915.87 - Step 6: Final answer
x = 16,880,198.09
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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.