Finding the Fourth Proportional to 28,485,743.80, 39,310,273.24 and 15,433,327.12
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Solution
The fourth proportional to 28,485,743.80, 39,310,273.24 and 15,433,327.12 is: 21,297,962.60
Step by Step Solution
- Step 1: Write the proportion equation
28,485,743.80 : 39,310,273.24 = 15,433,327.12 : x - Step 2: Convert to fraction form
28,485,743.80/39,310,273.24 = 15,433,327.12/x - Step 3: Cross multiply
28,485,743.80x = 39,310,273.24 × 15,433,327.12 - Step 4: Simplify right side
28,485,743.80x = 606,688,306,089,502.25 - Step 5: Solve for x
x = 606,688,306,089,502.25/28,485,743.80 - Step 6: Final answer
x = 21,297,962.60
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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.