Finding the Fourth Proportional to 13,169,330.40, 19,787,173.20 and 8,379,314.40
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Solution
The fourth proportional to 13,169,330.40, 19,787,173.20 and 8,379,314.40 is: 12,590,081.67
Step by Step Solution
- Step 1: Write the proportion equation
13,169,330.40 : 19,787,173.20 = 8,379,314.40 : x - Step 2: Convert to fraction form
13,169,330.40/19,787,173.20 = 8,379,314.40/x - Step 3: Cross multiply
13,169,330.40x = 19,787,173.20 × 8,379,314.40 - Step 4: Simplify right side
13,169,330.40x = 165,802,945,330,054.09 - Step 5: Solve for x
x = 165,802,945,330,054.09/13,169,330.40 - Step 6: Final answer
x = 12,590,081.67
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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.