Finding the Fourth Proportional to 18,381,187.70, 27,571,781.55 and 15,511,406.30
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Solution
The fourth proportional to 18,381,187.70, 27,571,781.55 and 15,511,406.30 is: 23,267,109.45
Step by Step Solution
- Step 1: Write the proportion equation
18,381,187.70 : 27,571,781.55 = 15,511,406.30 : x - Step 2: Convert to fraction form
18,381,187.70/27,571,781.55 = 15,511,406.30/x - Step 3: Cross multiply
18,381,187.70x = 27,571,781.55 × 15,511,406.30 - Step 4: Simplify right side
18,381,187.70x = 427,677,106,036,893.81 - Step 5: Solve for x
x = 427,677,106,036,893.81/18,381,187.70 - Step 6: Final answer
x = 23,267,109.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.