Finding the Fourth Proportional to 21,392,697.52, 29,522,325.72 and 13,128,626.08
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Solution
The fourth proportional to 21,392,697.52, 29,522,325.72 and 13,128,626.08 is: 18,117,751.40
Step by Step Solution
- Step 1: Write the proportion equation
21,392,697.52 : 29,522,325.72 = 13,128,626.08 : x - Step 2: Convert to fraction form
21,392,697.52/29,522,325.72 = 13,128,626.08/x - Step 3: Cross multiply
21,392,697.52x = 29,522,325.72 × 13,128,626.08 - Step 4: Simplify right side
21,392,697.52x = 387,587,575,389,846.75 - Step 5: Solve for x
x = 387,587,575,389,846.75/21,392,697.52 - Step 6: Final answer
x = 18,117,751.40
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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.