Finding the Fourth Proportional to 20,605,640.09, 28,434,360.88 and 11,437,561.13
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Solution
The fourth proportional to 20,605,640.09, 28,434,360.88 and 11,437,561.13 is: 15,783,044.80
Step by Step Solution
- Step 1: Write the proportion equation
20,605,640.09 : 28,434,360.88 = 11,437,561.13 : x - Step 2: Convert to fraction form
20,605,640.09/28,434,360.88 = 11,437,561.13/x - Step 3: Cross multiply
20,605,640.09x = 28,434,360.88 × 11,437,561.13 - Step 4: Simplify right side
20,605,640.09x = 325,219,740,757,480.62 - Step 5: Solve for x
x = 325,219,740,757,480.62/20,605,640.09 - Step 6: Final answer
x = 15,783,044.80
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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.