Finding the Fourth Proportional to 15,338,980.26, 21,168,235.69 and 8,463,905.18
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Solution
The fourth proportional to 15,338,980.26, 21,168,235.69 and 8,463,905.18 is: 11,680,433.55
Step by Step Solution
- Step 1: Write the proportion equation
15,338,980.26 : 21,168,235.69 = 8,463,905.18 : x - Step 2: Convert to fraction form
15,338,980.26/21,168,235.69 = 8,463,905.18/x - Step 3: Cross multiply
15,338,980.26x = 21,168,235.69 × 8,463,905.18 - Step 4: Simplify right side
15,338,980.26x = 179,165,939,708,051.88 - Step 5: Solve for x
x = 179,165,939,708,051.88/15,338,980.26 - Step 6: Final answer
x = 11,680,433.55
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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.