Finding the Fourth Proportional to 18,128,906.81, 25,017,125.12 and 9,868,797.14
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Solution
The fourth proportional to 18,128,906.81, 25,017,125.12 and 9,868,797.14 is: 13,618,522.92
Step by Step Solution
- Step 1: Write the proportion equation
18,128,906.81 : 25,017,125.12 = 9,868,797.14 : x - Step 2: Convert to fraction form
18,128,906.81/25,017,125.12 = 9,868,797.14/x - Step 3: Cross multiply
18,128,906.81x = 25,017,125.12 × 9,868,797.14 - Step 4: Simplify right side
18,128,906.81x = 246,888,932,848,476.97 - Step 5: Solve for x
x = 246,888,932,848,476.97/18,128,906.81 - Step 6: Final answer
x = 13,618,522.92
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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.