Finding the Fourth Proportional to 18,801,110.40, 28,201,665.60 and 12,409,867.80
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Solution
The fourth proportional to 18,801,110.40, 28,201,665.60 and 12,409,867.80 is: 18,614,801.70
Step by Step Solution
- Step 1: Write the proportion equation
18,801,110.40 : 28,201,665.60 = 12,409,867.80 : x - Step 2: Convert to fraction form
18,801,110.40/28,201,665.60 = 12,409,867.80/x - Step 3: Cross multiply
18,801,110.40x = 28,201,665.60 × 12,409,867.80 - Step 4: Simplify right side
18,801,110.40x = 349,978,941,835,807.75 - Step 5: Solve for x
x = 349,978,941,835,807.75/18,801,110.40 - Step 6: Final answer
x = 18,614,801.70
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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.