Finding the Fourth Proportional to 12,128,194.32, 16,736,821.50 and 6,621,568.99
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Solution
The fourth proportional to 12,128,194.32, 16,736,821.50 and 6,621,568.99 is: 9,137,717.89
Step by Step Solution
- Step 1: Write the proportion equation
12,128,194.32 : 16,736,821.50 = 6,621,568.99 : x - Step 2: Convert to fraction form
12,128,194.32/16,736,821.50 = 6,621,568.99/x - Step 3: Cross multiply
12,128,194.32x = 16,736,821.50 × 6,621,568.99 - Step 4: Simplify right side
12,128,194.32x = 110,824,018,235,565.28 - Step 5: Solve for x
x = 110,824,018,235,565.28/12,128,194.32 - Step 6: Final answer
x = 9,137,717.89
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1.5x scale
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.