Finding the Fourth Proportional to 20,616,764.85, 28,450,356.04 and 11,449,998.09
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Solution
The fourth proportional to 20,616,764.85, 28,450,356.04 and 11,449,998.09 is: 15,800,564.47
Step by Step Solution
- Step 1: Write the proportion equation
20,616,764.85 : 28,450,356.04 = 11,449,998.09 : x - Step 2: Convert to fraction form
20,616,764.85/28,450,356.04 = 11,449,998.09/x - Step 3: Cross multiply
20,616,764.85x = 28,450,356.04 × 11,449,998.09 - Step 4: Simplify right side
20,616,764.85x = 325,756,522,146,943.25 - Step 5: Solve for x
x = 325,756,522,146,943.25/20,616,764.85 - Step 6: Final answer
x = 15,800,564.47
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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.