Finding the Fourth Proportional to 18,648,085.80, 27,972,128.70 and 13,609,237.80
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Solution
The fourth proportional to 18,648,085.80, 27,972,128.70 and 13,609,237.80 is: 20,413,856.70
Step by Step Solution
- Step 1: Write the proportion equation
18,648,085.80 : 27,972,128.70 = 13,609,237.80 : x - Step 2: Convert to fraction form
18,648,085.80/27,972,128.70 = 13,609,237.80/x - Step 3: Cross multiply
18,648,085.80x = 27,972,128.70 × 13,609,237.80 - Step 4: Simplify right side
18,648,085.80x = 380,679,351,250,504.88 - Step 5: Solve for x
x = 380,679,351,250,504.88/18,648,085.80 - Step 6: Final answer
x = 20,413,856.70
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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.