Finding the Fourth Proportional to 21,276,159.70, 31,904,908.35 and 8,492,415.70
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Solution
The fourth proportional to 21,276,159.70, 31,904,908.35 and 8,492,415.70 is: 12,734,898.99
Step by Step Solution
- Step 1: Write the proportion equation
21,276,159.70 : 31,904,908.35 = 8,492,415.70 : x - Step 2: Convert to fraction form
21,276,159.70/31,904,908.35 = 8,492,415.70/x - Step 3: Cross multiply
21,276,159.70x = 31,904,908.35 × 8,492,415.70 - Step 4: Simplify right side
21,276,159.70x = 270,949,744,578,601.09 - Step 5: Solve for x
x = 270,949,744,578,601.09/21,276,159.70 - Step 6: Final answer
x = 12,734,898.99
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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.