Finding the Fourth Proportional to 21,651,612.89, 29,878,976.81 and 11,728,306.18
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Solution
The fourth proportional to 21,651,612.89, 29,878,976.81 and 11,728,306.18 is: 16,184,927.66
Step by Step Solution
- Step 1: Write the proportion equation
21,651,612.89 : 29,878,976.81 = 11,728,306.18 : x - Step 2: Convert to fraction form
21,651,612.89/29,878,976.81 = 11,728,306.18/x - Step 3: Cross multiply
21,651,612.89x = 29,878,976.81 × 11,728,306.18 - Step 4: Simplify right side
21,651,612.89x = 350,429,788,372,799.69 - Step 5: Solve for x
x = 350,429,788,372,799.69/21,651,612.89 - Step 6: Final answer
x = 16,184,927.66
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1.5x scale
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.