Finding the Fourth Proportional to 19,765,603.55, 27,276,343.09 and 11,389,896.32
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Solution
The fourth proportional to 19,765,603.55, 27,276,343.09 and 11,389,896.32 is: 15,717,947.55
Step by Step Solution
- Step 1: Write the proportion equation
19,765,603.55 : 27,276,343.09 = 11,389,896.32 : x - Step 2: Convert to fraction form
19,765,603.55/27,276,343.09 = 11,389,896.32/x - Step 3: Cross multiply
19,765,603.55x = 27,276,343.09 × 11,389,896.32 - Step 4: Simplify right side
19,765,603.55x = 310,674,719,836,489.56 - Step 5: Solve for x
x = 310,674,719,836,489.56/19,765,603.55 - Step 6: Final answer
x = 15,717,947.55
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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.