Finding the Fourth Proportional to 28,545,582.78, 39,392,943.21 and 15,492,841.92
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Solution
The fourth proportional to 28,545,582.78, 39,392,943.21 and 15,492,841.92 is: 21,380,143.00
Step by Step Solution
- Step 1: Write the proportion equation
28,545,582.78 : 39,392,943.21 = 15,492,841.92 : x - Step 2: Convert to fraction form
28,545,582.78/39,392,943.21 = 15,492,841.92/x - Step 3: Cross multiply
28,545,582.78x = 39,392,943.21 × 15,492,841.92 - Step 4: Simplify right side
28,545,582.78x = 610,308,641,916,067.38 - Step 5: Solve for x
x = 610,308,641,916,067.38/28,545,582.78 - Step 6: Final answer
x = 21,380,143.00
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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.