Finding the Fourth Proportional to 18,431,422.41, 27,659,476.20 and 7,648,733.63
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Solution
The fourth proportional to 18,431,422.41, 27,659,476.20 and 7,648,733.63 is: 11,478,222.40
Step by Step Solution
- Step 1: Write the proportion equation
18,431,422.41 : 27,659,476.20 = 7,648,733.63 : x - Step 2: Convert to fraction form
18,431,422.41/27,659,476.20 = 7,648,733.63/x - Step 3: Cross multiply
18,431,422.41x = 27,659,476.20 × 7,648,733.63 - Step 4: Simplify right side
18,431,422.41x = 211,559,965,660,827.22 - Step 5: Solve for x
x = 211,559,965,660,827.22/18,431,422.41 - Step 6: Final answer
x = 11,478,222.40
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1.5x scale
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.