Finding the Fourth Proportional to 15,180,901.30, 20,949,879.99 and 8,305,498.18
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Solution
The fourth proportional to 15,180,901.30, 20,949,879.99 and 8,305,498.18 is: 11,461,716.71
Step by Step Solution
- Step 1: Write the proportion equation
15,180,901.30 : 20,949,879.99 = 8,305,498.18 : x - Step 2: Convert to fraction form
15,180,901.30/20,949,879.99 = 8,305,498.18/x - Step 3: Cross multiply
15,180,901.30x = 20,949,879.99 × 8,305,498.18 - Step 4: Simplify right side
15,180,901.30x = 173,999,190,128,163.41 - Step 5: Solve for x
x = 173,999,190,128,163.41/15,180,901.30 - Step 6: Final answer
x = 11,461,716.71
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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.