Finding the Fourth Proportional to 13,887.08, 19,163.79 and 7,918.61
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Solution
The fourth proportional to 13,887.08, 19,163.79 and 7,918.61 is: 10,927.46
Step by Step Solution
- Step 1: Write the proportion equation
13,887.08 : 19,163.79 = 7,918.61 : x - Step 2: Convert to fraction form
13,887.08/19,163.79 = 7,918.61/x - Step 3: Cross multiply
13,887.08x = 19,163.79 × 7,918.61 - Step 4: Simplify right side
13,887.08x = 151,750,579.13 - Step 5: Solve for x
x = 151,750,579.13/13,887.08 - Step 6: Final answer
x = 10,927.46
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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.