Finding the Fourth Proportional to 28,716,701.72, 39,629,171.58 and 15,664,245.08
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Solution
The fourth proportional to 28,716,701.72, 39,629,171.58 and 15,664,245.08 is: 21,616,725.42
Step by Step Solution
- Step 1: Write the proportion equation
28,716,701.72 : 39,629,171.58 = 15,664,245.08 : x - Step 2: Convert to fraction form
28,716,701.72/39,629,171.58 = 15,664,245.08/x - Step 3: Cross multiply
28,716,701.72x = 39,629,171.58 × 15,664,245.08 - Step 4: Simplify right side
28,716,701.72x = 620,761,055,946,490.75 - Step 5: Solve for x
x = 620,761,055,946,490.75/28,716,701.72 - Step 6: Final answer
x = 21,616,725.42
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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.