Finding the Fourth Proportional to 13,182,881.60, 18,190,272.12 and 7,381,907.84
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Solution
The fourth proportional to 13,182,881.60, 18,190,272.12 and 7,381,907.84 is: 10,185,854.39
Step by Step Solution
- Step 1: Write the proportion equation
13,182,881.60 : 18,190,272.12 = 7,381,907.84 : x - Step 2: Convert to fraction form
13,182,881.60/18,190,272.12 = 7,381,907.84/x - Step 3: Cross multiply
13,182,881.60x = 18,190,272.12 × 7,381,907.84 - Step 4: Simplify right side
13,182,881.60x = 134,278,912,374,361.42 - Step 5: Solve for x
x = 134,278,912,374,361.42/13,182,881.60 - Step 6: Final answer
x = 10,185,854.39
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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.