Finding the Fourth Proportional to 13,106,479.20, 19,659,718.80 and 7,437,775.20
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Solution
The fourth proportional to 13,106,479.20, 19,659,718.80 and 7,437,775.20 is: 11,156,662.80
Step by Step Solution
- Step 1: Write the proportion equation
13,106,479.20 : 19,659,718.80 = 7,437,775.20 : x - Step 2: Convert to fraction form
13,106,479.20/19,659,718.80 = 7,437,775.20/x - Step 3: Cross multiply
13,106,479.20x = 19,659,718.80 × 7,437,775.20 - Step 4: Simplify right side
13,106,479.20x = 146,224,568,929,613.78 - Step 5: Solve for x
x = 146,224,568,929,613.78/13,106,479.20 - Step 6: Final answer
x = 11,156,662.80
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1.5x scale
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.