Finding the Fourth Proportional to 21,217,695.26, 29,285,576.19 and 12,964,707.18
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Solution
The fourth proportional to 21,217,695.26, 29,285,576.19 and 12,964,707.18 is: 17,894,446.84
Step by Step Solution
- Step 1: Write the proportion equation
21,217,695.26 : 29,285,576.19 = 12,964,707.18 : x - Step 2: Convert to fraction form
21,217,695.26/29,285,576.19 = 12,964,707.18/x - Step 3: Cross multiply
21,217,695.26x = 29,285,576.19 × 12,964,707.18 - Step 4: Simplify right side
21,217,695.26x = 379,678,919,900,930.06 - Step 5: Solve for x
x = 379,678,919,900,930.06/21,217,695.26 - Step 6: Final answer
x = 17,894,446.84
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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.