Finding the Fourth Proportional to 19,786,502.70, 29,679,754.05 and 12,228,230.70
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Solution
The fourth proportional to 19,786,502.70, 29,679,754.05 and 12,228,230.70 is: 18,342,346.05
Step by Step Solution
- Step 1: Write the proportion equation
19,786,502.70 : 29,679,754.05 = 12,228,230.70 : x - Step 2: Convert to fraction form
19,786,502.70/29,679,754.05 = 12,228,230.70/x - Step 3: Cross multiply
19,786,502.70x = 29,679,754.05 × 12,228,230.70 - Step 4: Simplify right side
19,786,502.70x = 362,930,879,642,659.31 - Step 5: Solve for x
x = 362,930,879,642,659.31/19,786,502.70 - Step 6: Final answer
x = 18,342,346.05
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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.