Finding the Fourth Proportional to 18,643,143.68, 27,966,224.64 and 5,179,973.12
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Solution
The fourth proportional to 18,643,143.68, 27,966,224.64 and 5,179,973.12 is: 7,770,378.99
Step by Step Solution
- Step 1: Write the proportion equation
18,643,143.68 : 27,966,224.64 = 5,179,973.12 : x - Step 2: Convert to fraction form
18,643,143.68/27,966,224.64 = 5,179,973.12/x - Step 3: Cross multiply
18,643,143.68x = 27,966,224.64 × 5,179,973.12 - Step 4: Simplify right side
18,643,143.68x = 144,864,291,903,081.69 - Step 5: Solve for x
x = 144,864,291,903,081.69/18,643,143.68 - Step 6: Final answer
x = 7,770,378.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.