Finding the Fourth Proportional to 18,640,720.62, 25,718,029.74 and 10,900,283.67
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Solution
The fourth proportional to 18,640,720.62, 25,718,029.74 and 10,900,283.67 is: 15,038,786.61
Step by Step Solution
- Step 1: Write the proportion equation
18,640,720.62 : 25,718,029.74 = 10,900,283.67 : x - Step 2: Convert to fraction form
18,640,720.62/25,718,029.74 = 10,900,283.67/x - Step 3: Cross multiply
18,640,720.62x = 25,718,029.74 × 10,900,283.67 - Step 4: Simplify right side
18,640,720.62x = 280,333,819,599,496.31 - Step 5: Solve for x
x = 280,333,819,599,496.31/18,640,720.62 - Step 6: Final answer
x = 15,038,786.61
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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.