Finding the Fourth Proportional to 13,471,905.80, 20,207,858.70 and 8,097,134.60
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Solution
The fourth proportional to 13,471,905.80, 20,207,858.70 and 8,097,134.60 is: 12,145,701.90
Step by Step Solution
- Step 1: Write the proportion equation
13,471,905.80 : 20,207,858.70 = 8,097,134.60 : x - Step 2: Convert to fraction form
13,471,905.80/20,207,858.70 = 8,097,134.60/x - Step 3: Cross multiply
13,471,905.80x = 20,207,858.70 × 8,097,134.60 - Step 4: Simplify right side
13,471,905.80x = 163,625,751,871,681 - Step 5: Solve for x
x = 163,625,751,871,681/13,471,905.80 - Step 6: Final answer
x = 12,145,701.90
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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.