Finding the Fourth Proportional to 21,555,266.76, 29,741,827.70 and 12,386,138.04
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Solution
The fourth proportional to 21,555,266.76, 29,741,827.70 and 12,386,138.04 is: 17,090,318.93
Step by Step Solution
- Step 1: Write the proportion equation
21,555,266.76 : 29,741,827.70 = 12,386,138.04 : x - Step 2: Convert to fraction form
21,555,266.76/29,741,827.70 = 12,386,138.04/x - Step 3: Cross multiply
21,555,266.76x = 29,741,827.70 × 12,386,138.04 - Step 4: Simplify right side
21,555,266.76x = 368,386,383,454,095.69 - Step 5: Solve for x
x = 368,386,383,454,095.69/21,555,266.76 - Step 6: Final answer
x = 17,090,318.93
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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.