Finding the Fourth Proportional to 13,130,351.49, 18,122,908.37 and 7,699,593.09
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Solution
The fourth proportional to 13,130,351.49, 18,122,908.37 and 7,699,593.09 is: 10,627,211.32
Step by Step Solution
- Step 1: Write the proportion equation
13,130,351.49 : 18,122,908.37 = 7,699,593.09 : x - Step 2: Convert to fraction form
13,130,351.49/18,122,908.37 = 7,699,593.09/x - Step 3: Cross multiply
13,130,351.49x = 18,122,908.37 × 7,699,593.09 - Step 4: Simplify right side
13,130,351.49x = 139,539,020,017,857.19 - Step 5: Solve for x
x = 139,539,020,017,857.19/13,130,351.49 - Step 6: Final answer
x = 10,627,211.32
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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.