Finding the Fourth Proportional to 20,238,466.85, 27,929,120.99 and 11,071,109.60
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Solution
The fourth proportional to 20,238,466.85, 27,929,120.99 and 11,071,109.60 is: 15,278,151.34
Step by Step Solution
- Step 1: Write the proportion equation
20,238,466.85 : 27,929,120.99 = 11,071,109.60 : x - Step 2: Convert to fraction form
20,238,466.85/27,929,120.99 = 11,071,109.60/x - Step 3: Cross multiply
20,238,466.85x = 27,929,120.99 × 11,071,109.60 - Step 4: Simplify right side
20,238,466.85x = 309,206,359,511,950.50 - Step 5: Solve for x
x = 309,206,359,511,950.50/20,238,466.85 - Step 6: Final answer
x = 15,278,151.34
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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.