Finding the Fourth Proportional to 19,646,638.43, 26,915,990.65 and 18,910,287.68
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Solution
The fourth proportional to 19,646,638.43, 26,915,990.65 and 18,910,287.68 is: 25,907,186.52
Step by Step Solution
- Step 1: Write the proportion equation
19,646,638.43 : 26,915,990.65 = 18,910,287.68 : x - Step 2: Convert to fraction form
19,646,638.43/26,915,990.65 = 18,910,287.68/x - Step 3: Cross multiply
19,646,638.43x = 26,915,990.65 × 18,910,287.68 - Step 4: Simplify right side
19,646,638.43x = 508,989,126,201,834.56 - Step 5: Solve for x
x = 508,989,126,201,834.56/19,646,638.43 - Step 6: Final answer
x = 25,907,186.52
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.