Finding the Fourth Proportional to 14,351,129.61, 21,536,781.62 and 12,979,015.23
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Solution
The fourth proportional to 14,351,129.61, 21,536,781.62 and 12,979,015.23 is: 19,477,645.61
Step by Step Solution
- Step 1: Write the proportion equation
14,351,129.61 : 21,536,781.62 = 12,979,015.23 : x - Step 2: Convert to fraction form
14,351,129.61/21,536,781.62 = 12,979,015.23/x - Step 3: Cross multiply
14,351,129.61x = 21,536,781.62 × 12,979,015.23 - Step 4: Simplify right side
14,351,129.61x = 279,526,216,586,269 - Step 5: Solve for x
x = 279,526,216,586,269/14,351,129.61 - Step 6: Final answer
x = 19,477,645.61
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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.