Finding the Fourth Proportional to 15,784,612.80, 21,782,831.27 and 8,541,268.80
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Solution
The fourth proportional to 15,784,612.80, 21,782,831.27 and 8,541,268.80 is: 11,786,986.44
Step by Step Solution
- Step 1: Write the proportion equation
15,784,612.80 : 21,782,831.27 = 8,541,268.80 : x - Step 2: Convert to fraction form
15,784,612.80/21,782,831.27 = 8,541,268.80/x - Step 3: Cross multiply
15,784,612.80x = 21,782,831.27 × 8,541,268.80 - Step 4: Simplify right side
15,784,612.80x = 186,053,017,059,409.06 - Step 5: Solve for x
x = 186,053,017,059,409.06/15,784,612.80 - Step 6: Final answer
x = 11,786,986.44
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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.