Finding the Fourth Proportional to 13,686,445.24, 18,887,774.86 and 7,491,497.02
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Solution
The fourth proportional to 13,686,445.24, 18,887,774.86 and 7,491,497.02 is: 10,338,528.86
Step by Step Solution
- Step 1: Write the proportion equation
13,686,445.24 : 18,887,774.86 = 7,491,497.02 : x - Step 2: Convert to fraction form
13,686,445.24/18,887,774.86 = 7,491,497.02/x - Step 3: Cross multiply
13,686,445.24x = 18,887,774.86 × 7,491,497.02 - Step 4: Simplify right side
13,686,445.24x = 141,497,709,078,120.91 - Step 5: Solve for x
x = 141,497,709,078,120.91/13,686,445.24 - Step 6: Final answer
x = 10,338,528.86
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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.