Finding the Fourth Proportional to 18,452,938.20, 27,679,407.30 and 13,669,969.20
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Solution
The fourth proportional to 18,452,938.20, 27,679,407.30 and 13,669,969.20 is: 20,504,953.80
Step by Step Solution
- Step 1: Write the proportion equation
18,452,938.20 : 27,679,407.30 = 13,669,969.20 : x - Step 2: Convert to fraction form
18,452,938.20/27,679,407.30 = 13,669,969.20/x - Step 3: Cross multiply
18,452,938.20x = 27,679,407.30 × 13,669,969.20 - Step 4: Simplify right side
18,452,938.20x = 378,376,645,265,255.12 - Step 5: Solve for x
x = 378,376,645,265,255.12/18,452,938.20 - Step 6: Final answer
x = 20,504,953.80
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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.