Finding the Fourth Proportional to 21,384,951.64, 29,511,813.55 and 12,093,911.08
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Solution
The fourth proportional to 21,384,951.64, 29,511,813.55 and 12,093,911.08 is: 16,689,925.47
Step by Step Solution
- Step 1: Write the proportion equation
21,384,951.64 : 29,511,813.55 = 12,093,911.08 : x - Step 2: Convert to fraction form
21,384,951.64/29,511,813.55 = 12,093,911.08/x - Step 3: Cross multiply
21,384,951.64x = 29,511,813.55 × 12,093,911.08 - Step 4: Simplify right side
21,384,951.64x = 356,913,248,975,390.38 - Step 5: Solve for x
x = 356,913,248,975,390.38/21,384,951.64 - Step 6: Final answer
x = 16,689,925.47
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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.