Finding the Fourth Proportional to 20,841,593.76, 28,697,197.60 and 18,514,450.80
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Solution
The fourth proportional to 20,841,593.76, 28,697,197.60 and 18,514,450.80 is: 25,492,909.00
Step by Step Solution
- Step 1: Write the proportion equation
20,841,593.76 : 28,697,197.60 = 18,514,450.80 : x - Step 2: Convert to fraction form
20,841,593.76/28,697,197.60 = 18,514,450.80/x - Step 3: Cross multiply
20,841,593.76x = 28,697,197.60 × 18,514,450.80 - Step 4: Simplify right side
20,841,593.76x = 531,312,853,063,078.12 - Step 5: Solve for x
x = 531,312,853,063,078.12/20,841,593.76 - Step 6: Final answer
x = 25,492,909.00
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1.5x scale
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.