Finding the Fourth Proportional to 13,438,317.83, 18,546,453.02 and 7,637,971.49
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Solution
The fourth proportional to 13,438,317.83, 18,546,453.02 and 7,637,971.49 is: 10,541,295.50
Step by Step Solution
- Step 1: Write the proportion equation
13,438,317.83 : 18,546,453.02 = 7,637,971.49 : x - Step 2: Convert to fraction form
13,438,317.83/18,546,453.02 = 7,637,971.49/x - Step 3: Cross multiply
13,438,317.83x = 18,546,453.02 × 7,637,971.49 - Step 4: Simplify right side
13,438,317.83x = 141,657,279,276,462.28 - Step 5: Solve for x
x = 141,657,279,276,462.28/13,438,317.83 - Step 6: Final answer
x = 10,541,295.50
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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.