Finding the Fourth Proportional to 20,860,204.20, 31,290,306.30 and 13,675,909.20
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Solution
The fourth proportional to 20,860,204.20, 31,290,306.30 and 13,675,909.20 is: 20,513,863.80
Step by Step Solution
- Step 1: Write the proportion equation
20,860,204.20 : 31,290,306.30 = 13,675,909.20 : x - Step 2: Convert to fraction form
20,860,204.20/31,290,306.30 = 13,675,909.20/x - Step 3: Cross multiply
20,860,204.20x = 31,290,306.30 × 13,675,909.20 - Step 4: Simplify right side
20,860,204.20x = 427,923,387,798,987.94 - Step 5: Solve for x
x = 427,923,387,798,987.94/20,860,204.20 - Step 6: Final answer
x = 20,513,863.80
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1.5x scale
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.