Finding the Fourth Proportional to 13,689,217.99, 18,891,091.28 and 7,494,214.50
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Solution
The fourth proportional to 13,689,217.99, 18,891,091.28 and 7,494,214.50 is: 10,341,999.84
Step by Step Solution
- Step 1: Write the proportion equation
13,689,217.99 : 18,891,091.28 = 7,494,214.50 : x - Step 2: Convert to fraction form
13,689,217.99/18,891,091.28 = 7,494,214.50/x - Step 3: Cross multiply
13,689,217.99x = 18,891,091.28 × 7,494,214.50 - Step 4: Simplify right side
13,689,217.99x = 141,573,890,210,135.09 - Step 5: Solve for x
x = 141,573,890,210,135.09/13,689,217.99 - Step 6: Final answer
x = 10,341,999.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.