Finding the Fourth Proportional to 21,403,346.32, 29,536,529.26 and 12,708,676.31
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Solution
The fourth proportional to 21,403,346.32, 29,536,529.26 and 12,708,676.31 is: 17,537,920.66
Step by Step Solution
- Step 1: Write the proportion equation
21,403,346.32 : 29,536,529.26 = 12,708,676.31 : x - Step 2: Convert to fraction form
21,403,346.32/29,536,529.26 = 12,708,676.31/x - Step 3: Cross multiply
21,403,346.32x = 29,536,529.26 × 12,708,676.31 - Step 4: Simplify right side
21,403,346.32x = 375,370,189,622,640.44 - Step 5: Solve for x
x = 375,370,189,622,640.44/21,403,346.32 - Step 6: Final answer
x = 17,537,920.66
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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.