Finding the Fourth Proportional to 28,545,581.91, 39,392,942.01 and 15,492,840.99
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Solution
The fourth proportional to 28,545,581.91, 39,392,942.01 and 15,492,840.99 is: 21,380,141.72
Step by Step Solution
- Step 1: Write the proportion equation
28,545,581.91 : 39,392,942.01 = 15,492,840.99 : x - Step 2: Convert to fraction form
28,545,581.91/39,392,942.01 = 15,492,840.99/x - Step 3: Cross multiply
28,545,581.91x = 39,392,942.01 × 15,492,840.99 - Step 4: Simplify right side
28,545,581.91x = 610,308,586,689,221 - Step 5: Solve for x
x = 610,308,586,689,221/28,545,581.91 - Step 6: Final answer
x = 21,380,141.72
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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.