Finding the Fourth Proportional to 21,476,723.98, 29,638,235.76 and 11,687,580.76
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Solution
The fourth proportional to 21,476,723.98, 29,638,235.76 and 11,687,580.76 is: 16,129,055.55
Step by Step Solution
- Step 1: Write the proportion equation
21,476,723.98 : 29,638,235.76 = 11,687,580.76 : x - Step 2: Convert to fraction form
21,476,723.98/29,638,235.76 = 11,687,580.76/x - Step 3: Cross multiply
21,476,723.98x = 29,638,235.76 × 11,687,580.76 - Step 4: Simplify right side
21,476,723.98x = 346,399,274,028,920 - Step 5: Solve for x
x = 346,399,274,028,920/21,476,723.98 - Step 6: Final answer
x = 16,129,055.55
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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.