Finding the Fourth Proportional to 13,207,964.70, 19,811,947.05 and 7,539,260.70
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Solution
The fourth proportional to 13,207,964.70, 19,811,947.05 and 7,539,260.70 is: 11,308,891.05
Step by Step Solution
- Step 1: Write the proportion equation
13,207,964.70 : 19,811,947.05 = 7,539,260.70 : x - Step 2: Convert to fraction form
13,207,964.70/19,811,947.05 = 7,539,260.70/x - Step 3: Cross multiply
13,207,964.70x = 19,811,947.05 × 7,539,260.70 - Step 4: Simplify right side
13,207,964.70x = 149,367,433,784,545.94 - Step 5: Solve for x
x = 149,367,433,784,545.94/13,207,964.70 - Step 6: Final answer
x = 11,308,891.05
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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.