Finding the Fourth Proportional to 15,729,163.25, 21,706,918.72 and 8,759,840.75
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Solution
The fourth proportional to 15,729,163.25, 21,706,918.72 and 8,759,840.75 is: 12,088,955.28
Step by Step Solution
- Step 1: Write the proportion equation
15,729,163.25 : 21,706,918.72 = 8,759,840.75 : x - Step 2: Convert to fraction form
15,729,163.25/21,706,918.72 = 8,759,840.75/x - Step 3: Cross multiply
15,729,163.25x = 21,706,918.72 × 8,759,840.75 - Step 4: Simplify right side
15,729,163.25x = 190,149,151,111,360.59 - Step 5: Solve for x
x = 190,149,151,111,360.59/15,729,163.25 - Step 6: Final answer
x = 12,088,955.28
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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.