Finding the Fourth Proportional to 13,130,349.49, 18,122,905.61 and 7,699,591.09
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Solution
The fourth proportional to 13,130,349.49, 18,122,905.61 and 7,699,591.09 is: 10,627,208.56
Step by Step Solution
- Step 1: Write the proportion equation
13,130,349.49 : 18,122,905.61 = 7,699,591.09 : x - Step 2: Convert to fraction form
13,130,349.49/18,122,905.61 = 7,699,591.09/x - Step 3: Cross multiply
13,130,349.49x = 18,122,905.61 × 7,699,591.09 - Step 4: Simplify right side
13,130,349.49x = 139,538,962,559,667 - Step 5: Solve for x
x = 139,538,962,559,667/13,130,349.49 - Step 6: Final answer
x = 10,627,208.56
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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.