Finding the Fourth Proportional to 20,539,828.53, 28,345,848.75 and 11,372,471.28
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Solution
The fourth proportional to 20,539,828.53, 28,345,848.75 and 11,372,471.28 is: 15,694,500.58
Step by Step Solution
- Step 1: Write the proportion equation
20,539,828.53 : 28,345,848.75 = 11,372,471.28 : x - Step 2: Convert to fraction form
20,539,828.53/28,345,848.75 = 11,372,471.28/x - Step 3: Cross multiply
20,539,828.53x = 28,345,848.75 × 11,372,471.28 - Step 4: Simplify right side
20,539,828.53x = 322,362,350,816,598.88 - Step 5: Solve for x
x = 322,362,350,816,598.88/20,539,828.53 - Step 6: Final answer
x = 15,694,500.58
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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.