Finding the Fourth Proportional to 21,217,470.96, 31,835,615.40 and 11,117,691.12
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Solution
The fourth proportional to 21,217,470.96, 31,835,615.40 and 11,117,691.12 is: 16,681,466.86
Step by Step Solution
- Step 1: Write the proportion equation
21,217,470.96 : 31,835,615.40 = 11,117,691.12 : x - Step 2: Convert to fraction form
21,217,470.96/31,835,615.40 = 11,117,691.12/x - Step 3: Cross multiply
21,217,470.96x = 31,835,615.40 × 11,117,691.12 - Step 4: Simplify right side
21,217,470.96x = 353,938,538,632,315.19 - Step 5: Solve for x
x = 353,938,538,632,315.19/21,217,470.96 - Step 6: Final answer
x = 16,681,466.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.