Finding the Fourth Proportional to 20,139,815.68, 30,230,853.74 and 17,848,965.99
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Solution
The fourth proportional to 20,139,815.68, 30,230,853.74 and 17,848,965.99 is: 26,792,175.70
Step by Step Solution
- Step 1: Write the proportion equation
20,139,815.68 : 30,230,853.74 = 17,848,965.99 : x - Step 2: Convert to fraction form
20,139,815.68/30,230,853.74 = 17,848,965.99/x - Step 3: Cross multiply
20,139,815.68x = 30,230,853.74 × 17,848,965.99 - Step 4: Simplify right side
20,139,815.68x = 539,589,480,253,924.25 - Step 5: Solve for x
x = 539,589,480,253,924.25/20,139,815.68 - Step 6: Final answer
x = 26,792,175.70
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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.