Finding the Fourth Proportional to 15,281,129.21, 21,086,042.39 and 10,330,342.84
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Solution
The fourth proportional to 15,281,129.21, 21,086,042.39 and 10,330,342.84 is: 14,254,577.92
Step by Step Solution
- Step 1: Write the proportion equation
15,281,129.21 : 21,086,042.39 = 10,330,342.84 : x - Step 2: Convert to fraction form
15,281,129.21/21,086,042.39 = 10,330,342.84/x - Step 3: Cross multiply
15,281,129.21x = 21,086,042.39 × 10,330,342.84 - Step 4: Simplify right side
15,281,129.21x = 217,826,046,952,553.66 - Step 5: Solve for x
x = 217,826,046,952,553.66/15,281,129.21 - Step 6: Final answer
x = 14,254,577.92
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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.