Finding the Fourth Proportional to 13,207,979.10, 19,811,968.65 and 5,649,707.10
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Solution
The fourth proportional to 13,207,979.10, 19,811,968.65 and 5,649,707.10 is: 8,474,560.65
Step by Step Solution
- Step 1: Write the proportion equation
13,207,979.10 : 19,811,968.65 = 5,649,707.10 : x - Step 2: Convert to fraction form
13,207,979.10/19,811,968.65 = 5,649,707.10/x - Step 3: Cross multiply
13,207,979.10x = 19,811,968.65 × 5,649,707.10 - Step 4: Simplify right side
13,207,979.10x = 111,931,819,946,882.41 - Step 5: Solve for x
x = 111,931,819,946,882.41/13,207,979.10 - Step 6: Final answer
x = 8,474,560.65
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Double scale
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Similar ratio
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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.