Finding the Fourth Proportional to 21,685,106.18, 29,925,491.99 and 11,895,629.45
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Solution
The fourth proportional to 21,685,106.18, 29,925,491.99 and 11,895,629.45 is: 16,415,993.57
Step by Step Solution
- Step 1: Write the proportion equation
21,685,106.18 : 29,925,491.99 = 11,895,629.45 : x - Step 2: Convert to fraction form
21,685,106.18/29,925,491.99 = 11,895,629.45/x - Step 3: Cross multiply
21,685,106.18x = 29,925,491.99 × 11,895,629.45 - Step 4: Simplify right side
21,685,106.18x = 355,982,563,612,877.50 - Step 5: Solve for x
x = 355,982,563,612,877.50/21,685,106.18 - Step 6: Final answer
x = 16,415,993.57
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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.