Finding the Fourth Proportional to 21,298,228.26, 29,391,554.28 and 11,508,672.12
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Solution
The fourth proportional to 21,298,228.26, 29,391,554.28 and 11,508,672.12 is: 15,881,967.14
Step by Step Solution
- Step 1: Write the proportion equation
21,298,228.26 : 29,391,554.28 = 11,508,672.12 : x - Step 2: Convert to fraction form
21,298,228.26/29,391,554.28 = 11,508,672.12/x - Step 3: Cross multiply
21,298,228.26x = 29,391,554.28 × 11,508,672.12 - Step 4: Simplify right side
21,298,228.26x = 338,257,761,305,702.69 - Step 5: Solve for x
x = 338,257,761,305,702.69/21,298,228.26 - Step 6: Final answer
x = 15,881,967.14
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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.