Finding the Fourth Proportional to 21,555,256.91, 29,741,814.02 and 12,386,128.19
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Solution
The fourth proportional to 21,555,256.91, 29,741,814.02 and 12,386,128.19 is: 17,090,305.28
Step by Step Solution
- Step 1: Write the proportion equation
21,555,256.91 : 29,741,814.02 = 12,386,128.19 : x - Step 2: Convert to fraction form
21,555,256.91/29,741,814.02 = 12,386,128.19/x - Step 3: Cross multiply
21,555,256.91x = 29,741,814.02 × 12,386,128.19 - Step 4: Simplify right side
21,555,256.91x = 368,385,920,844,219.56 - Step 5: Solve for x
x = 368,385,920,844,219.56/21,555,256.91 - Step 6: Final answer
x = 17,090,305.28
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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.