Finding the Fourth Proportional to 13,150,643.97, 18,148,449.12 and 7,349,425.53
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Solution
The fourth proportional to 13,150,643.97, 18,148,449.12 and 7,349,425.53 is: 10,142,520.44
Step by Step Solution
- Step 1: Write the proportion equation
13,150,643.97 : 18,148,449.12 = 7,349,425.53 : x - Step 2: Convert to fraction form
13,150,643.97/18,148,449.12 = 7,349,425.53/x - Step 3: Cross multiply
13,150,643.97x = 18,148,449.12 × 7,349,425.53 - Step 4: Simplify right side
13,150,643.97x = 133,380,675,292,434.05 - Step 5: Solve for x
x = 133,380,675,292,434.05/13,150,643.97 - Step 6: Final answer
x = 10,142,520.44
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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.