Finding the Fourth Proportional to 25,434,841.38, 35,107,984.35 and 20,217,107.99
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Solution
The fourth proportional to 25,434,841.38, 35,107,984.35 and 20,217,107.99 is: 27,905,890.99
Step by Step Solution
- Step 1: Write the proportion equation
25,434,841.38 : 35,107,984.35 = 20,217,107.99 : x - Step 2: Convert to fraction form
25,434,841.38/35,107,984.35 = 20,217,107.99/x - Step 3: Cross multiply
25,434,841.38x = 35,107,984.35 × 20,217,107.99 - Step 4: Simplify right side
25,434,841.38x = 709,781,910,915,179.88 - Step 5: Solve for x
x = 709,781,910,915,179.88/25,434,841.38 - Step 6: Final answer
x = 27,905,890.99
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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.