Finding the Fourth Proportional to 18,474,928.97, 25,489,802.39 and 12,893,027.00
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Solution
The fourth proportional to 18,474,928.97, 25,489,802.39 and 12,893,027.00 is: 17,788,469.49
Step by Step Solution
- Step 1: Write the proportion equation
18,474,928.97 : 25,489,802.39 = 12,893,027.00 : x - Step 2: Convert to fraction form
18,474,928.97/25,489,802.39 = 12,893,027.00/x - Step 3: Cross multiply
18,474,928.97x = 25,489,802.39 × 12,893,027.00 - Step 4: Simplify right side
18,474,928.97x = 328,640,710,247,020.38 - Step 5: Solve for x
x = 328,640,710,247,020.38/18,474,928.97 - Step 6: Final answer
x = 17,788,469.49
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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.