Finding the Fourth Proportional to 27,680,922.56, 38,198,932.74 and 15,290,749.32
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Solution
The fourth proportional to 27,680,922.56, 38,198,932.74 and 15,290,749.32 is: 21,100,825.07
Step by Step Solution
- Step 1: Write the proportion equation
27,680,922.56 : 38,198,932.74 = 15,290,749.32 : x - Step 2: Convert to fraction form
27,680,922.56/38,198,932.74 = 15,290,749.32/x - Step 3: Cross multiply
27,680,922.56x = 38,198,932.74 × 15,290,749.32 - Step 4: Simplify right side
27,680,922.56x = 584,090,304,818,880.75 - Step 5: Solve for x
x = 584,090,304,818,880.75/27,680,922.56 - Step 6: Final answer
x = 21,100,825.07
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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.