Finding the Fourth Proportional to 13,731,044.49, 18,949,727.13 and 7,619,472.99
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Solution
The fourth proportional to 13,731,044.49, 18,949,727.13 and 7,619,472.99 is: 10,515,364.23
Step by Step Solution
- Step 1: Write the proportion equation
13,731,044.49 : 18,949,727.13 = 7,619,472.99 : x - Step 2: Convert to fraction form
13,731,044.49/18,949,727.13 = 7,619,472.99/x - Step 3: Cross multiply
13,731,044.49x = 18,949,727.13 × 7,619,472.99 - Step 4: Simplify right side
13,731,044.49x = 144,386,934,034,905.22 - Step 5: Solve for x
x = 144,386,934,034,905.22/13,731,044.49 - Step 6: Final answer
x = 10,515,364.23
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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.