Finding the Fourth Proportional to 21,525,143.20, 29,697,245.64 and 13,794,448.12
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Solution
The fourth proportional to 21,525,143.20, 29,697,245.64 and 13,794,448.12 is: 19,031,562.79
Step by Step Solution
- Step 1: Write the proportion equation
21,525,143.20 : 29,697,245.64 = 13,794,448.12 : x - Step 2: Convert to fraction form
21,525,143.20/29,697,245.64 = 13,794,448.12/x - Step 3: Cross multiply
21,525,143.20x = 29,697,245.64 × 13,794,448.12 - Step 4: Simplify right side
21,525,143.20x = 409,657,114,287,876.19 - Step 5: Solve for x
x = 409,657,114,287,876.19/21,525,143.20 - Step 6: Final answer
x = 19,031,562.79
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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.