Finding the Fourth Proportional to 13,188,470.20, 19,782,705.30 and 11,991,743.80
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Solution
The fourth proportional to 13,188,470.20, 19,782,705.30 and 11,991,743.80 is: 17,987,615.70
Step by Step Solution
- Step 1: Write the proportion equation
13,188,470.20 : 19,782,705.30 = 11,991,743.80 : x - Step 2: Convert to fraction form
13,188,470.20/19,782,705.30 = 11,991,743.80/x - Step 3: Cross multiply
13,188,470.20x = 19,782,705.30 × 11,991,743.80 - Step 4: Simplify right side
13,188,470.20x = 237,229,133,628,502.16 - Step 5: Solve for x
x = 237,229,133,628,502.16/13,188,470.20 - Step 6: Final answer
x = 17,987,615.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.