Finding the Fourth Proportional to 20,038,647.36, 27,653,343.12 and 10,871,287.68
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Solution
The fourth proportional to 20,038,647.36, 27,653,343.12 and 10,871,287.68 is: 15,002,382.30
Step by Step Solution
- Step 1: Write the proportion equation
20,038,647.36 : 27,653,343.12 = 10,871,287.68 : x - Step 2: Convert to fraction form
20,038,647.36/27,653,343.12 = 10,871,287.68/x - Step 3: Cross multiply
20,038,647.36x = 27,653,343.12 × 10,871,287.68 - Step 4: Simplify right side
20,038,647.36x = 300,627,448,371,268.75 - Step 5: Solve for x
x = 300,627,448,371,268.75/20,038,647.36 - Step 6: Final answer
x = 15,002,382.30
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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.