Finding the Fourth Proportional to 13,215,731.64, 18,242,896.62 and 9,368,362.68
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Solution
The fourth proportional to 13,215,731.64, 18,242,896.62 and 9,368,362.68 is: 12,932,017.43
Step by Step Solution
- Step 1: Write the proportion equation
13,215,731.64 : 18,242,896.62 = 9,368,362.68 : x - Step 2: Convert to fraction form
13,215,731.64/18,242,896.62 = 9,368,362.68/x - Step 3: Cross multiply
13,215,731.64x = 18,242,896.62 × 9,368,362.68 - Step 4: Simplify right side
13,215,731.64x = 170,906,071,869,906.16 - Step 5: Solve for x
x = 170,906,071,869,906.16/13,215,731.64 - Step 6: Final answer
x = 12,932,017.43
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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.