Finding the Fourth Proportional to 11,190,831.70, 16,786,247.55 and 8,356,479.70
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Solution
The fourth proportional to 11,190,831.70, 16,786,247.55 and 8,356,479.70 is: 12,534,719.55
Step by Step Solution
- Step 1: Write the proportion equation
11,190,831.70 : 16,786,247.55 = 8,356,479.70 : x - Step 2: Convert to fraction form
11,190,831.70/16,786,247.55 = 8,356,479.70/x - Step 3: Cross multiply
11,190,831.70x = 16,786,247.55 × 8,356,479.70 - Step 4: Simplify right side
11,190,831.70x = 140,273,936,890,749.75 - Step 5: Solve for x
x = 140,273,936,890,749.75/11,190,831.70 - Step 6: Final answer
x = 12,534,719.55
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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.