Finding the Fourth Proportional to 21,387,829.20, 32,081,743.80 and 16,348,981.20
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Solution
The fourth proportional to 21,387,829.20, 32,081,743.80 and 16,348,981.20 is: 24,523,471.80
Step by Step Solution
- Step 1: Write the proportion equation
21,387,829.20 : 32,081,743.80 = 16,348,981.20 : x - Step 2: Convert to fraction form
21,387,829.20/32,081,743.80 = 16,348,981.20/x - Step 3: Cross multiply
21,387,829.20x = 32,081,743.80 × 16,348,981.20 - Step 4: Simplify right side
21,387,829.20x = 524,503,826,249,416.56 - Step 5: Solve for x
x = 524,503,826,249,416.56/21,387,829.20 - Step 6: Final answer
x = 24,523,471.80
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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.