Finding the Fourth Proportional to 21,694,726.67, 29,939,585.98 and 11,905,521.18
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Solution
The fourth proportional to 21,694,726.67, 29,939,585.98 and 11,905,521.18 is: 16,430,092.92
Step by Step Solution
- Step 1: Write the proportion equation
21,694,726.67 : 29,939,585.98 = 11,905,521.18 : x - Step 2: Convert to fraction form
21,694,726.67/29,939,585.98 = 11,905,521.18/x - Step 3: Cross multiply
21,694,726.67x = 29,939,585.98 × 11,905,521.18 - Step 4: Simplify right side
21,694,726.67x = 356,446,375,005,321.06 - Step 5: Solve for x
x = 356,446,375,005,321.06/21,694,726.67 - Step 6: Final answer
x = 16,430,092.92
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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.