Finding the Fourth Proportional to 20,809,846.53, 28,717,649.66 and 11,518,061.97
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Solution
The fourth proportional to 20,809,846.53, 28,717,649.66 and 11,518,061.97 is: 15,894,959.52
Step by Step Solution
- Step 1: Write the proportion equation
20,809,846.53 : 28,717,649.66 = 11,518,061.97 : x - Step 2: Convert to fraction form
20,809,846.53/28,717,649.66 = 11,518,061.97/x - Step 3: Cross multiply
20,809,846.53x = 28,717,649.66 × 11,518,061.97 - Step 4: Simplify right side
20,809,846.53x = 330,771,668,349,110.31 - Step 5: Solve for x
x = 330,771,668,349,110.31/20,809,846.53 - Step 6: Final answer
x = 15,894,959.52
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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.