Finding the Fourth Proportional to 18,432,616.80, 27,648,925.20 and 15,745,231.20
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Solution
The fourth proportional to 18,432,616.80, 27,648,925.20 and 15,745,231.20 is: 23,617,846.80
Step by Step Solution
- Step 1: Write the proportion equation
18,432,616.80 : 27,648,925.20 = 15,745,231.20 : x - Step 2: Convert to fraction form
18,432,616.80/27,648,925.20 = 15,745,231.20/x - Step 3: Cross multiply
18,432,616.80x = 27,648,925.20 × 15,745,231.20 - Step 4: Simplify right side
18,432,616.80x = 435,338,719,705,506.19 - Step 5: Solve for x
x = 435,338,719,705,506.19/18,432,616.80 - Step 6: Final answer
x = 23,617,846.80
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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.