Finding the Fourth Proportional to 21,405,236, 29,539,225.68 and 12,820,532
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Solution
The fourth proportional to 21,405,236, 29,539,225.68 and 12,820,532 is: 17,692,334.16
Step by Step Solution
- Step 1: Write the proportion equation
21,405,236 : 29,539,225.68 = 12,820,532 : x - Step 2: Convert to fraction form
21,405,236/29,539,225.68 = 12,820,532/x - Step 3: Cross multiply
21,405,236x = 29,539,225.68 × 12,820,532 - Step 4: Simplify right side
21,405,236x = 378,708,588,085,661.75 - Step 5: Solve for x
x = 378,708,588,085,661.75/21,405,236 - Step 6: Final answer
x = 17,692,334.16
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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.