Finding the Fourth Proportional to 13,168,261.60, 19,794,382.80 and 12,412,434.40
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Solution
The fourth proportional to 13,168,261.60, 19,794,382.80 and 12,412,434.40 is: 18,658,231.85
Step by Step Solution
- Step 1: Write the proportion equation
13,168,261.60 : 19,794,382.80 = 12,412,434.40 : x - Step 2: Convert to fraction form
13,168,261.60/19,794,382.80 = 12,412,434.40/x - Step 3: Cross multiply
13,168,261.60x = 19,794,382.80 × 12,412,434.40 - Step 4: Simplify right side
13,168,261.60x = 245,696,477,993,488.34 - Step 5: Solve for x
x = 245,696,477,993,488.34/13,168,261.60 - Step 6: Final answer
x = 18,658,231.85
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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.