Finding the Fourth Proportional to 20,539,695.97, 28,345,665.95 and 11,372,338.63
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Solution
The fourth proportional to 20,539,695.97, 28,345,665.95 and 11,372,338.63 is: 15,694,317.60
Step by Step Solution
- Step 1: Write the proportion equation
20,539,695.97 : 28,345,665.95 = 11,372,338.63 : x - Step 2: Convert to fraction form
20,539,695.97/28,345,665.95 = 11,372,338.63/x - Step 3: Cross multiply
20,539,695.97x = 28,345,665.95 × 11,372,338.63 - Step 4: Simplify right side
20,539,695.97x = 322,356,511,876,260.69 - Step 5: Solve for x
x = 322,356,511,876,260.69/20,539,695.97 - Step 6: Final answer
x = 15,694,317.60
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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.