Finding the Fourth Proportional to 28,531,999.11, 39,374,234.28 and 15,479,257.62
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Solution
The fourth proportional to 28,531,999.11, 39,374,234.28 and 15,479,257.62 is: 21,361,416.48
Step by Step Solution
- Step 1: Write the proportion equation
28,531,999.11 : 39,374,234.28 = 15,479,257.62 : x - Step 2: Convert to fraction form
28,531,999.11/39,374,234.28 = 15,479,257.62/x - Step 3: Cross multiply
28,531,999.11x = 39,374,234.28 × 15,479,257.62 - Step 4: Simplify right side
28,531,999.11x = 609,483,916,010,355.25 - Step 5: Solve for x
x = 609,483,916,010,355.25/28,531,999.11 - Step 6: Final answer
x = 21,361,416.48
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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.