Finding the Fourth Proportional to 13,121,879.94, 18,087,574.14 and 8,984,756.70
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Solution
The fourth proportional to 13,121,879.94, 18,087,574.14 and 8,984,756.70 is: 12,384,845.29
Step by Step Solution
- Step 1: Write the proportion equation
13,121,879.94 : 18,087,574.14 = 8,984,756.70 : x - Step 2: Convert to fraction form
13,121,879.94/18,087,574.14 = 8,984,756.70/x - Step 3: Cross multiply
13,121,879.94x = 18,087,574.14 × 8,984,756.70 - Step 4: Simplify right side
13,121,879.94x = 162,512,452,941,111.72 - Step 5: Solve for x
x = 162,512,452,941,111.72/13,121,879.94 - Step 6: Final answer
x = 12,384,845.29
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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.