Finding the Fourth Proportional to 18,793,513.80, 28,190,270.70 and 11,235,241.80
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Solution
The fourth proportional to 18,793,513.80, 28,190,270.70 and 11,235,241.80 is: 16,852,862.70
Step by Step Solution
- Step 1: Write the proportion equation
18,793,513.80 : 28,190,270.70 = 11,235,241.80 : x - Step 2: Convert to fraction form
18,793,513.80/28,190,270.70 = 11,235,241.80/x - Step 3: Cross multiply
18,793,513.80x = 28,190,270.70 × 11,235,241.80 - Step 4: Simplify right side
18,793,513.80x = 316,724,507,721,955.25 - Step 5: Solve for x
x = 316,724,507,721,955.25/18,793,513.80 - Step 6: Final answer
x = 16,852,862.70
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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.