Finding the Fourth Proportional to 11,128,147.80, 16,692,221.70 and 11,128,147.80
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Solution
The fourth proportional to 11,128,147.80, 16,692,221.70 and 11,128,147.80 is: 16,692,221.70
Step by Step Solution
- Step 1: Write the proportion equation
11,128,147.80 : 16,692,221.70 = 11,128,147.80 : x - Step 2: Convert to fraction form
11,128,147.80/16,692,221.70 = 11,128,147.80/x - Step 3: Cross multiply
11,128,147.80x = 16,692,221.70 × 11,128,147.80 - Step 4: Simplify right side
11,128,147.80x = 185,753,510,187,967.25 - Step 5: Solve for x
x = 185,753,510,187,967.25/11,128,147.80 - Step 6: Final answer
x = 16,692,221.70
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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.