Finding the Fourth Proportional to 20,774,215.94, 31,161,958.74 and 7,127,170.88
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Solution
The fourth proportional to 20,774,215.94, 31,161,958.74 and 7,127,170.88 is: 10,690,974.12
Step by Step Solution
- Step 1: Write the proportion equation
20,774,215.94 : 31,161,958.74 = 7,127,170.88 : x - Step 2: Convert to fraction form
20,774,215.94/31,161,958.74 = 7,127,170.88/x - Step 3: Cross multiply
20,774,215.94x = 31,161,958.74 × 7,127,170.88 - Step 4: Simplify right side
20,774,215.94x = 222,096,604,895,489.47 - Step 5: Solve for x
x = 222,096,604,895,489.47/20,774,215.94 - Step 6: Final answer
x = 10,690,974.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.