Finding the Fourth Proportional to 20,890,326.66, 28,828,755.14 and 13,054,388.99
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Solution
The fourth proportional to 20,890,326.66, 28,828,755.14 and 13,054,388.99 is: 18,015,122.01
Step by Step Solution
- Step 1: Write the proportion equation
20,890,326.66 : 28,828,755.14 = 13,054,388.99 : x - Step 2: Convert to fraction form
20,890,326.66/28,828,755.14 = 13,054,388.99/x - Step 3: Cross multiply
20,890,326.66x = 28,828,755.14 × 13,054,388.99 - Step 4: Simplify right side
20,890,326.66x = 376,341,783,557,678.12 - Step 5: Solve for x
x = 376,341,783,557,678.12/20,890,326.66 - Step 6: Final answer
x = 18,015,122.01
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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.