Finding the Fourth Proportional to 21,115,160.38, 29,139,370.68 and 11,947,803.13
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Solution
The fourth proportional to 21,115,160.38, 29,139,370.68 and 11,947,803.13 is: 16,488,222.58
Step by Step Solution
- Step 1: Write the proportion equation
21,115,160.38 : 29,139,370.68 = 11,947,803.13 : x - Step 2: Convert to fraction form
21,115,160.38/29,139,370.68 = 11,947,803.13/x - Step 3: Cross multiply
21,115,160.38x = 29,139,370.68 × 11,947,803.13 - Step 4: Simplify right side
21,115,160.38x = 348,151,464,216,734.25 - Step 5: Solve for x
x = 348,151,464,216,734.25/21,115,160.38 - Step 6: Final answer
x = 16,488,222.58
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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.