Finding the Fourth Proportional to 13,534,766.16, 18,678,069.36 and 7,423,238.40
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Solution
The fourth proportional to 13,534,766.16, 18,678,069.36 and 7,423,238.40 is: 10,244,119.48
Step by Step Solution
- Step 1: Write the proportion equation
13,534,766.16 : 18,678,069.36 = 7,423,238.40 : x - Step 2: Convert to fraction form
13,534,766.16/18,678,069.36 = 7,423,238.40/x - Step 3: Cross multiply
13,534,766.16x = 18,678,069.36 × 7,423,238.40 - Step 4: Simplify right side
13,534,766.16x = 138,651,761,711,015.42 - Step 5: Solve for x
x = 138,651,761,711,015.42/13,534,766.16 - Step 6: Final answer
x = 10,244,119.48
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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.