Finding the Fourth Proportional to 21,420,172.96, 29,559,873.72 and 11,630,636.08
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Solution
The fourth proportional to 21,420,172.96, 29,559,873.72 and 11,630,636.08 is: 16,050,296.81
Step by Step Solution
- Step 1: Write the proportion equation
21,420,172.96 : 29,559,873.72 = 11,630,636.08 : x - Step 2: Convert to fraction form
21,420,172.96/29,559,873.72 = 11,630,636.08/x - Step 3: Cross multiply
21,420,172.96x = 29,559,873.72 × 11,630,636.08 - Step 4: Simplify right side
21,420,172.96x = 343,800,133,808,075.81 - Step 5: Solve for x
x = 343,800,133,808,075.81/21,420,172.96 - Step 6: Final answer
x = 16,050,296.81
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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.