Finding the Fourth Proportional to 21,553,967.22, 29,783,382.90 and 15,348,240.18
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Solution
The fourth proportional to 21,553,967.22, 29,783,382.90 and 15,348,240.18 is: 21,208,277.32
Step by Step Solution
- Step 1: Write the proportion equation
21,553,967.22 : 29,783,382.90 = 15,348,240.18 : x - Step 2: Convert to fraction form
21,553,967.22/29,783,382.90 = 15,348,240.18/x - Step 3: Cross multiply
21,553,967.22x = 29,783,382.90 × 15,348,240.18 - Step 4: Simplify right side
21,553,967.22x = 457,122,514,122,104.88 - Step 5: Solve for x
x = 457,122,514,122,104.88/21,553,967.22 - Step 6: Final answer
x = 21,208,277.32
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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.