Finding the Fourth Proportional to 21,030,411.48, 29,021,955.66 and 11,372,619.48
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Solution
The fourth proportional to 21,030,411.48, 29,021,955.66 and 11,372,619.48 is: 15,694,208.29
Step by Step Solution
- Step 1: Write the proportion equation
21,030,411.48 : 29,021,955.66 = 11,372,619.48 : x - Step 2: Convert to fraction form
21,030,411.48/29,021,955.66 = 11,372,619.48/x - Step 3: Cross multiply
21,030,411.48x = 29,021,955.66 × 11,372,619.48 - Step 4: Simplify right side
21,030,411.48x = 330,055,658,286,612.25 - Step 5: Solve for x
x = 330,055,658,286,612.25/21,030,411.48 - Step 6: Final answer
x = 15,694,208.29
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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.