Finding the Fourth Proportional to 21,104,680.28, 29,101,331.12 and 13,748,872.55
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Solution
The fourth proportional to 21,104,680.28, 29,101,331.12 and 13,748,872.55 is: 18,958,377.34
Step by Step Solution
- Step 1: Write the proportion equation
21,104,680.28 : 29,101,331.12 = 13,748,872.55 : x - Step 2: Convert to fraction form
21,104,680.28/29,101,331.12 = 13,748,872.55/x - Step 3: Cross multiply
21,104,680.28x = 29,101,331.12 × 13,748,872.55 - Step 4: Simplify right side
21,104,680.28x = 400,110,492,389,977.69 - Step 5: Solve for x
x = 400,110,492,389,977.69/21,104,680.28 - Step 6: Final answer
x = 18,958,377.34
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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.