Finding the Fourth Proportional to 20,617,730.25, 28,450,808.46 and 11,916,466.44
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Solution
The fourth proportional to 20,617,730.25, 28,450,808.46 and 11,916,466.44 is: 16,443,764.66
Step by Step Solution
- Step 1: Write the proportion equation
20,617,730.25 : 28,450,808.46 = 11,916,466.44 : x - Step 2: Convert to fraction form
20,617,730.25/28,450,808.46 = 11,916,466.44/x - Step 3: Cross multiply
20,617,730.25x = 28,450,808.46 × 11,916,466.44 - Step 4: Simplify right side
20,617,730.25x = 339,033,104,062,204.06 - Step 5: Solve for x
x = 339,033,104,062,204.06/20,617,730.25 - Step 6: Final answer
x = 16,443,764.66
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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.