Finding the Fourth Proportional to 28,722,472.97, 39,635,630.96 and 15,668,953.43
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Solution
The fourth proportional to 28,722,472.97, 39,635,630.96 and 15,668,953.43 is: 21,622,401.95
Step by Step Solution
- Step 1: Write the proportion equation
28,722,472.97 : 39,635,630.96 = 15,668,953.43 : x - Step 2: Convert to fraction form
28,722,472.97/39,635,630.96 = 15,668,953.43/x - Step 3: Cross multiply
28,722,472.97x = 39,635,630.96 × 15,668,953.43 - Step 4: Simplify right side
28,722,472.97x = 621,048,855,404,383.25 - Step 5: Solve for x
x = 621,048,855,404,383.25/28,722,472.97 - Step 6: Final answer
x = 21,622,401.95
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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.