Finding the Fourth Proportional to 20,802,878.60, 31,183,322.70 and 9,451,473.80
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Solution
The fourth proportional to 20,802,878.60, 31,183,322.70 and 9,451,473.80 is: 14,167,671.85
Step by Step Solution
- Step 1: Write the proportion equation
20,802,878.60 : 31,183,322.70 = 9,451,473.80 : x - Step 2: Convert to fraction form
20,802,878.60/31,183,322.70 = 9,451,473.80/x - Step 3: Cross multiply
20,802,878.60x = 31,183,322.70 × 9,451,473.80 - Step 4: Simplify right side
20,802,878.60x = 294,728,357,495,995.25 - Step 5: Solve for x
x = 294,728,357,495,995.25/20,802,878.60 - Step 6: Final answer
x = 14,167,671.85
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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.