Finding the Fourth Proportional to 21,246,741.44, 29,322,774.24 and 12,991,641.92
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Solution
The fourth proportional to 21,246,741.44, 29,322,774.24 and 12,991,641.92 is: 17,929,854.52
Step by Step Solution
- Step 1: Write the proportion equation
21,246,741.44 : 29,322,774.24 = 12,991,641.92 : x - Step 2: Convert to fraction form
21,246,741.44/29,322,774.24 = 12,991,641.92/x - Step 3: Cross multiply
21,246,741.44x = 29,322,774.24 × 12,991,641.92 - Step 4: Simplify right side
21,246,741.44x = 380,950,983,027,080.12 - Step 5: Solve for x
x = 380,950,983,027,080.12/21,246,741.44 - Step 6: Final answer
x = 17,929,854.52
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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.