Finding the Fourth Proportional to 15,253,425.12, 21,051,024.84 and 8,639,190.18
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Solution
The fourth proportional to 15,253,425.12, 21,051,024.84 and 8,639,190.18 is: 11,922,817.70
Step by Step Solution
- Step 1: Write the proportion equation
15,253,425.12 : 21,051,024.84 = 8,639,190.18 : x - Step 2: Convert to fraction form
15,253,425.12/21,051,024.84 = 8,639,190.18/x - Step 3: Cross multiply
15,253,425.12x = 21,051,024.84 × 8,639,190.18 - Step 4: Simplify right side
15,253,425.12x = 181,863,807,076,664.06 - Step 5: Solve for x
x = 181,863,807,076,664.06/15,253,425.12 - Step 6: Final answer
x = 11,922,817.70
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1.5x scale
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.