Finding the Fourth Proportional to 13,285,995.68, 18,336,028.38 and 8,132,762.72
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Solution
The fourth proportional to 13,285,995.68, 18,336,028.38 and 8,132,762.72 is: 11,224,041.59
Step by Step Solution
- Step 1: Write the proportion equation
13,285,995.68 : 18,336,028.38 = 8,132,762.72 : x - Step 2: Convert to fraction form
13,285,995.68/18,336,028.38 = 8,132,762.72/x - Step 3: Cross multiply
13,285,995.68x = 18,336,028.38 × 8,132,762.72 - Step 4: Simplify right side
13,285,995.68x = 149,122,568,041,725.97 - Step 5: Solve for x
x = 149,122,568,041,725.97/13,285,995.68 - Step 6: Final answer
x = 11,224,041.59
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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.