Finding the Fourth Proportional to 21,420,597.17, 32,131,929.11 and 7,043,346.65
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Solution
The fourth proportional to 21,420,597.17, 32,131,929.11 and 7,043,346.65 is: 10,565,359.75
Step by Step Solution
- Step 1: Write the proportion equation
21,420,597.17 : 32,131,929.11 = 7,043,346.65 : x - Step 2: Convert to fraction form
21,420,597.17/32,131,929.11 = 7,043,346.65/x - Step 3: Cross multiply
21,420,597.17x = 32,131,929.11 × 7,043,346.65 - Step 4: Simplify right side
21,420,597.17x = 226,316,315,059,079.59 - Step 5: Solve for x
x = 226,316,315,059,079.59/21,420,597.17 - Step 6: Final answer
x = 10,565,359.75
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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.