Finding the Fourth Proportional to 18,456,831.80, 27,685,247.70 and 13,354,998.20
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Solution
The fourth proportional to 18,456,831.80, 27,685,247.70 and 13,354,998.20 is: 20,032,497.30
Step by Step Solution
- Step 1: Write the proportion equation
18,456,831.80 : 27,685,247.70 = 13,354,998.20 : x - Step 2: Convert to fraction form
18,456,831.80/27,685,247.70 = 13,354,998.20/x - Step 3: Cross multiply
18,456,831.80x = 27,685,247.70 × 13,354,998.20 - Step 4: Simplify right side
18,456,831.80x = 369,736,433,200,054.12 - Step 5: Solve for x
x = 369,736,433,200,054.12/18,456,831.80 - Step 6: Final answer
x = 20,032,497.30
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1.5x scale
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.