Finding the Fourth Proportional to 21,509,560.50, 29,682,819.68 and 11,720,085.18
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Solution
The fourth proportional to 21,509,560.50, 29,682,819.68 and 11,720,085.18 is: 16,173,513.87
Step by Step Solution
- Step 1: Write the proportion equation
21,509,560.50 : 29,682,819.68 = 11,720,085.18 : x - Step 2: Convert to fraction form
21,509,560.50/29,682,819.68 = 11,720,085.18/x - Step 3: Cross multiply
21,509,560.50x = 29,682,819.68 × 11,720,085.18 - Step 4: Simplify right side
21,509,560.50x = 347,885,175,032,180.31 - Step 5: Solve for x
x = 347,885,175,032,180.31/21,509,560.50 - Step 6: Final answer
x = 16,173,513.87
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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.