Finding the Fourth Proportional to 21,657,790.84, 29,887,751.68 and 11,868,620.28
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Solution
The fourth proportional to 21,657,790.84, 29,887,751.68 and 11,868,620.28 is: 16,378,696.16
Step by Step Solution
- Step 1: Write the proportion equation
21,657,790.84 : 29,887,751.68 = 11,868,620.28 : x - Step 2: Convert to fraction form
21,657,790.84/29,887,751.68 = 11,868,620.28/x - Step 3: Cross multiply
21,657,790.84x = 29,887,751.68 × 11,868,620.28 - Step 4: Simplify right side
21,657,790.84x = 354,726,375,712,852.06 - Step 5: Solve for x
x = 354,726,375,712,852.06/21,657,790.84 - Step 6: Final answer
x = 16,378,696.16
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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.