Finding the Fourth Proportional to 11,478,486.05, 15,841,429.61 and 8,572,832.39
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Solution
The fourth proportional to 11,478,486.05, 15,841,429.61 and 8,572,832.39 is: 11,831,344.32
Step by Step Solution
- Step 1: Write the proportion equation
11,478,486.05 : 15,841,429.61 = 8,572,832.39 : x - Step 2: Convert to fraction form
11,478,486.05/15,841,429.61 = 8,572,832.39/x - Step 3: Cross multiply
11,478,486.05x = 15,841,429.61 × 8,572,832.39 - Step 4: Simplify right side
11,478,486.05x = 135,805,920,806,738 - Step 5: Solve for x
x = 135,805,920,806,738/11,478,486.05 - Step 6: Final answer
x = 11,831,344.32
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1.5x scale
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.