Finding the Fourth Proportional to 20,757,699.97, 31,139,521.50 and 6,381,974.81
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Solution
The fourth proportional to 20,757,699.97, 31,139,521.50 and 6,381,974.81 is: 9,573,875.82
Step by Step Solution
- Step 1: Write the proportion equation
20,757,699.97 : 31,139,521.50 = 6,381,974.81 : x - Step 2: Convert to fraction form
20,757,699.97/31,139,521.50 = 6,381,974.81/x - Step 3: Cross multiply
20,757,699.97x = 31,139,521.50 × 6,381,974.81 - Step 4: Simplify right side
20,757,699.97x = 198,731,641,808,453.41 - Step 5: Solve for x
x = 198,731,641,808,453.41/20,757,699.97 - Step 6: Final answer
x = 9,573,875.82
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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.