Finding the Fourth Proportional to 28,924,609.88, 39,918,440.86 and 15,874,391.48
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Solution
The fourth proportional to 28,924,609.88, 39,918,440.86 and 15,874,391.48 is: 21,908,020.88
Step by Step Solution
- Step 1: Write the proportion equation
28,924,609.88 : 39,918,440.86 = 15,874,391.48 : x - Step 2: Convert to fraction form
28,924,609.88/39,918,440.86 = 15,874,391.48/x - Step 3: Cross multiply
28,924,609.88x = 39,918,440.86 × 15,874,391.48 - Step 4: Simplify right side
28,924,609.88x = 633,680,957,243,589.75 - Step 5: Solve for x
x = 633,680,957,243,589.75/28,924,609.88 - Step 6: Final answer
x = 21,908,020.88
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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.