Finding the Fourth Proportional to 13,182,879.60, 18,190,269.36 and 7,381,905.84
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Solution
The fourth proportional to 13,182,879.60, 18,190,269.36 and 7,381,905.84 is: 10,185,851.63
Step by Step Solution
- Step 1: Write the proportion equation
13,182,879.60 : 18,190,269.36 = 7,381,905.84 : x - Step 2: Convert to fraction form
13,182,879.60/18,190,269.36 = 7,381,905.84/x - Step 3: Cross multiply
13,182,879.60x = 18,190,269.36 × 7,381,905.84 - Step 4: Simplify right side
13,182,879.60x = 134,278,855,619,757.06 - Step 5: Solve for x
x = 134,278,855,619,757.06/13,182,879.60 - Step 6: Final answer
x = 10,185,851.63
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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.