Finding the Fourth Proportional to 18,593,965.80, 27,890,948.70 and 13,555,117.80
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Solution
The fourth proportional to 18,593,965.80, 27,890,948.70 and 13,555,117.80 is: 20,332,676.70
Step by Step Solution
- Step 1: Write the proportion equation
18,593,965.80 : 27,890,948.70 = 13,555,117.80 : x - Step 2: Convert to fraction form
18,593,965.80/27,890,948.70 = 13,555,117.80/x - Step 3: Cross multiply
18,593,965.80x = 27,890,948.70 × 13,555,117.80 - Step 4: Simplify right side
18,593,965.80x = 378,065,095,182,256.88 - Step 5: Solve for x
x = 378,065,095,182,256.88/18,593,965.80 - Step 6: Final answer
x = 20,332,676.70
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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.