Finding the Fourth Proportional to 20,715,556.09, 28,582,468.16 and 13,371,816.48
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Solution
The fourth proportional to 20,715,556.09, 28,582,468.16 and 13,371,816.48 is: 18,449,879.75
Step by Step Solution
- Step 1: Write the proportion equation
20,715,556.09 : 28,582,468.16 = 13,371,816.48 : x - Step 2: Convert to fraction form
20,715,556.09/28,582,468.16 = 13,371,816.48/x - Step 3: Cross multiply
20,715,556.09x = 28,582,468.16 × 13,371,816.48 - Step 4: Simplify right side
20,715,556.09x = 382,199,518,780,963.31 - Step 5: Solve for x
x = 382,199,518,780,963.31/20,715,556.09 - Step 6: Final answer
x = 18,449,879.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.