Finding the Fourth Proportional to 25,901,489.60, 38,863,120.80 and 13,920,228.80
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Solution
The fourth proportional to 25,901,489.60, 38,863,120.80 and 13,920,228.80 is: 20,886,193.87
Step by Step Solution
- Step 1: Write the proportion equation
25,901,489.60 : 38,863,120.80 = 13,920,228.80 : x - Step 2: Convert to fraction form
25,901,489.60/38,863,120.80 = 13,920,228.80/x - Step 3: Cross multiply
25,901,489.60x = 38,863,120.80 × 13,920,228.80 - Step 4: Simplify right side
25,901,489.60x = 540,983,533,418,039 - Step 5: Solve for x
x = 540,983,533,418,039/25,901,489.60 - Step 6: Final answer
x = 20,886,193.87
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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.