Finding the Fourth Proportional to 21,420,569.20, 32,131,887.16 and 7,043,318.68
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Solution
The fourth proportional to 21,420,569.20, 32,131,887.16 and 7,043,318.68 is: 10,565,317.80
Step by Step Solution
- Step 1: Write the proportion equation
21,420,569.20 : 32,131,887.16 = 7,043,318.68 : x - Step 2: Convert to fraction form
21,420,569.20/32,131,887.16 = 7,043,318.68/x - Step 3: Cross multiply
21,420,569.20x = 32,131,887.16 × 7,043,318.68 - Step 4: Simplify right side
21,420,569.20x = 226,315,120,959,742.12 - Step 5: Solve for x
x = 226,315,120,959,742.12/21,420,569.20 - Step 6: Final answer
x = 10,565,317.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.