Finding the Fourth Proportional to 28,177,786.08, 38,868,157.80 and 18,630,036
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Solution
The fourth proportional to 28,177,786.08, 38,868,157.80 and 18,630,036 is: 25,698,086.32
Step by Step Solution
- Step 1: Write the proportion equation
28,177,786.08 : 38,868,157.80 = 18,630,036 : x - Step 2: Convert to fraction form
28,177,786.08/38,868,157.80 = 18,630,036/x - Step 3: Cross multiply
28,177,786.08x = 38,868,157.80 × 18,630,036 - Step 4: Simplify right side
28,177,786.08x = 724,115,179,067,680.75 - Step 5: Solve for x
x = 724,115,179,067,680.75/28,177,786.08 - Step 6: Final answer
x = 25,698,086.32
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1.5x scale
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.