Finding the Fourth Proportional to 21,580,515.05, 29,780,758.49 and 11,790,748.53
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Solution
The fourth proportional to 21,580,515.05, 29,780,758.49 and 11,790,748.53 is: 16,271,040.50
Step by Step Solution
- Step 1: Write the proportion equation
21,580,515.05 : 29,780,758.49 = 11,790,748.53 : x - Step 2: Convert to fraction form
21,580,515.05/29,780,758.49 = 11,790,748.53/x - Step 3: Cross multiply
21,580,515.05x = 29,780,758.49 × 11,790,748.53 - Step 4: Simplify right side
21,580,515.05x = 351,137,434,329,298.75 - Step 5: Solve for x
x = 351,137,434,329,298.75/21,580,515.05 - Step 6: Final answer
x = 16,271,040.50
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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.