Finding the Fourth Proportional to 20,769,357.33, 31,024,519.11 and 15,388,517.21
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Solution
The fourth proportional to 20,769,357.33, 31,024,519.11 and 15,388,517.21 is: 22,986,813.63
Step by Step Solution
- Step 1: Write the proportion equation
20,769,357.33 : 31,024,519.11 = 15,388,517.21 : x - Step 2: Convert to fraction form
20,769,357.33/31,024,519.11 = 15,388,517.21/x - Step 3: Cross multiply
20,769,357.33x = 31,024,519.11 × 15,388,517.21 - Step 4: Simplify right side
20,769,357.33x = 477,421,346,101,086.25 - Step 5: Solve for x
x = 477,421,346,101,086.25/20,769,357.33 - Step 6: Final answer
x = 22,986,813.63
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.