Finding the Fourth Proportional to 28,645,799.62, 39,531,707.50 and 15,593,433.70
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Solution
The fourth proportional to 28,645,799.62, 39,531,707.50 and 15,593,433.70 is: 21,519,212.87
Step by Step Solution
- Step 1: Write the proportion equation
28,645,799.62 : 39,531,707.50 = 15,593,433.70 : x - Step 2: Convert to fraction form
28,645,799.62/39,531,707.50 = 15,593,433.70/x - Step 3: Cross multiply
28,645,799.62x = 39,531,707.50 × 15,593,433.70 - Step 4: Simplify right side
28,645,799.62x = 616,435,059,949,042.75 - Step 5: Solve for x
x = 616,435,059,949,042.75/28,645,799.62 - Step 6: Final answer
x = 21,519,212.87
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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.