Finding the Fourth Proportional to 21,219,999.21, 29,283,599.16 and 11,562,207.21
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Solution
The fourth proportional to 21,219,999.21, 29,283,599.16 and 11,562,207.21 is: 15,955,846.09
Step by Step Solution
- Step 1: Write the proportion equation
21,219,999.21 : 29,283,599.16 = 11,562,207.21 : x - Step 2: Convert to fraction form
21,219,999.21/29,283,599.16 = 11,562,207.21/x - Step 3: Cross multiply
21,219,999.21x = 29,283,599.16 × 11,562,207.21 - Step 4: Simplify right side
21,219,999.21x = 338,583,041,342,502 - Step 5: Solve for x
x = 338,583,041,342,502/21,219,999.21 - Step 6: Final answer
x = 15,955,846.09
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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.