Finding the Fourth Proportional to 28,197,765.42, 42,287,888.79 and 13,615,618.62
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Solution
The fourth proportional to 28,197,765.42, 42,287,888.79 and 13,615,618.62 is: 20,419,198.38
Step by Step Solution
- Step 1: Write the proportion equation
28,197,765.42 : 42,287,888.79 = 13,615,618.62 : x - Step 2: Convert to fraction form
28,197,765.42/42,287,888.79 = 13,615,618.62/x - Step 3: Cross multiply
28,197,765.42x = 42,287,888.79 × 13,615,618.62 - Step 4: Simplify right side
28,197,765.42x = 575,775,766,009,613.25 - Step 5: Solve for x
x = 575,775,766,009,613.25/28,197,765.42 - Step 6: Final answer
x = 20,419,198.38
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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.