Finding the Fourth Proportional to 11,478,485.68, 15,841,429.09 and 8,572,832.01
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Solution
The fourth proportional to 11,478,485.68, 15,841,429.09 and 8,572,832.01 is: 11,831,343.81
Step by Step Solution
- Step 1: Write the proportion equation
11,478,485.68 : 15,841,429.09 = 8,572,832.01 : x - Step 2: Convert to fraction form
11,478,485.68/15,841,429.09 = 8,572,832.01/x - Step 3: Cross multiply
11,478,485.68x = 15,841,429.09 × 8,572,832.01 - Step 4: Simplify right side
11,478,485.68x = 135,805,910,413,687.27 - Step 5: Solve for x
x = 135,805,910,413,687.27/11,478,485.68 - Step 6: Final answer
x = 11,831,343.81
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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.