Finding the Fourth Proportional to 28,080,236.82, 38,752,223.72 and 15,690,630.99
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Solution
The fourth proportional to 28,080,236.82, 38,752,223.72 and 15,690,630.99 is: 21,653,907.20
Step by Step Solution
- Step 1: Write the proportion equation
28,080,236.82 : 38,752,223.72 = 15,690,630.99 : x - Step 2: Convert to fraction form
28,080,236.82/38,752,223.72 = 15,690,630.99/x - Step 3: Cross multiply
28,080,236.82x = 38,752,223.72 × 15,690,630.99 - Step 4: Simplify right side
28,080,236.82x = 608,046,842,353,992 - Step 5: Solve for x
x = 608,046,842,353,992/28,080,236.82 - Step 6: Final answer
x = 21,653,907.20
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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.