Finding the Fourth Proportional to 21,139,441.17, 29,174,686.97 and 11,972,470.29
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Solution
The fourth proportional to 21,139,441.17, 29,174,686.97 and 11,972,470.29 is: 16,523,287.92
Step by Step Solution
- Step 1: Write the proportion equation
21,139,441.17 : 29,174,686.97 = 11,972,470.29 : x - Step 2: Convert to fraction form
21,139,441.17/29,174,686.97 = 11,972,470.29/x - Step 3: Cross multiply
21,139,441.17x = 29,174,686.97 × 11,972,470.29 - Step 4: Simplify right side
21,139,441.17x = 349,293,072,908,512.75 - Step 5: Solve for x
x = 349,293,072,908,512.75/21,139,441.17 - Step 6: Final answer
x = 16,523,287.92
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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.