Finding the Fourth Proportional to 20,703,105.70, 31,031,330.55 and 9,925,569.70
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Solution
The fourth proportional to 20,703,105.70, 31,031,330.55 and 9,925,569.70 is: 14,877,170.54
Step by Step Solution
- Step 1: Write the proportion equation
20,703,105.70 : 31,031,330.55 = 9,925,569.70 : x - Step 2: Convert to fraction form
20,703,105.70/31,031,330.55 = 9,925,569.70/x - Step 3: Cross multiply
20,703,105.70x = 31,031,330.55 × 9,925,569.70 - Step 4: Simplify right side
20,703,105.70x = 308,003,634,257,764.31 - Step 5: Solve for x
x = 308,003,634,257,764.31/20,703,105.70 - Step 6: Final answer
x = 14,877,170.54
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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.