Finding the Fourth Proportional to 19,686,071.40, 29,529,107.10 and 12,474,220.20
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Solution
The fourth proportional to 19,686,071.40, 29,529,107.10 and 12,474,220.20 is: 18,711,330.30
Step by Step Solution
- Step 1: Write the proportion equation
19,686,071.40 : 29,529,107.10 = 12,474,220.20 : x - Step 2: Convert to fraction form
19,686,071.40/29,529,107.10 = 12,474,220.20/x - Step 3: Cross multiply
19,686,071.40x = 29,529,107.10 × 12,474,220.20 - Step 4: Simplify right side
19,686,071.40x = 368,352,584,274,783.44 - Step 5: Solve for x
x = 368,352,584,274,783.44/19,686,071.40 - Step 6: Final answer
x = 18,711,330.30
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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.