Finding the Fourth Proportional to 20,956,953.80, 31,435,430.70 and 18,437,529.80
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Solution
The fourth proportional to 20,956,953.80, 31,435,430.70 and 18,437,529.80 is: 27,656,294.70
Step by Step Solution
- Step 1: Write the proportion equation
20,956,953.80 : 31,435,430.70 = 18,437,529.80 : x - Step 2: Convert to fraction form
20,956,953.80/31,435,430.70 = 18,437,529.80/x - Step 3: Cross multiply
20,956,953.80x = 31,435,430.70 × 18,437,529.80 - Step 4: Simplify right side
20,956,953.80x = 579,591,690,307,084.88 - Step 5: Solve for x
x = 579,591,690,307,084.88/20,956,953.80 - Step 6: Final answer
x = 27,656,294.70
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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.