Finding the Fourth Proportional to 13,451,406.48, 18,563,388.84 and 7,340,170.32
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Solution
The fourth proportional to 13,451,406.48, 18,563,388.84 and 7,340,170.32 is: 10,129,679.45
Step by Step Solution
- Step 1: Write the proportion equation
13,451,406.48 : 18,563,388.84 = 7,340,170.32 : x - Step 2: Convert to fraction form
13,451,406.48/18,563,388.84 = 7,340,170.32/x - Step 3: Cross multiply
13,451,406.48x = 18,563,388.84 × 7,340,170.32 - Step 4: Simplify right side
13,451,406.48x = 136,258,435,801,987.23 - Step 5: Solve for x
x = 136,258,435,801,987.23/13,451,406.48 - Step 6: Final answer
x = 10,129,679.45
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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.