Finding the Fourth Proportional to 13,209,257.76, 18,228,907.74 and 7,407,914.94
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Solution
The fourth proportional to 13,209,257.76, 18,228,907.74 and 7,407,914.94 is: 10,222,996.67
Step by Step Solution
- Step 1: Write the proportion equation
13,209,257.76 : 18,228,907.74 = 7,407,914.94 : x - Step 2: Convert to fraction form
13,209,257.76/18,228,907.74 = 7,407,914.94/x - Step 3: Cross multiply
13,209,257.76x = 18,228,907.74 × 7,407,914.94 - Step 4: Simplify right side
13,209,257.76x = 135,038,198,014,807.31 - Step 5: Solve for x
x = 135,038,198,014,807.31/13,209,257.76 - Step 6: Final answer
x = 10,222,996.67
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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.