Finding the Fourth Proportional to 21,579,353.40, 32,381,471.70 and 8,125,836.60
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Solution
The fourth proportional to 21,579,353.40, 32,381,471.70 and 8,125,836.60 is: 12,193,439.86
Step by Step Solution
- Step 1: Write the proportion equation
21,579,353.40 : 32,381,471.70 = 8,125,836.60 : x - Step 2: Convert to fraction form
21,579,353.40/32,381,471.70 = 8,125,836.60/x - Step 3: Cross multiply
21,579,353.40x = 32,381,471.70 × 8,125,836.60 - Step 4: Simplify right side
21,579,353.40x = 263,126,547,901,724.19 - Step 5: Solve for x
x = 263,126,547,901,724.19/21,579,353.40 - Step 6: Final answer
x = 12,193,439.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.