Finding the Fourth Proportional to 20,620,324.10, 28,456,338.70 and 11,328,752.94
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Solution
The fourth proportional to 20,620,324.10, 28,456,338.70 and 11,328,752.94 is: 15,633,839.17
Step by Step Solution
- Step 1: Write the proportion equation
20,620,324.10 : 28,456,338.70 = 11,328,752.94 : x - Step 2: Convert to fraction form
20,620,324.10/28,456,338.70 = 11,328,752.94/x - Step 3: Cross multiply
20,620,324.10x = 28,456,338.70 × 11,328,752.94 - Step 4: Simplify right side
20,620,324.10x = 322,374,830,709,260.75 - Step 5: Solve for x
x = 322,374,830,709,260.75/20,620,324.10 - Step 6: Final answer
x = 15,633,839.17
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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.