Finding the Fourth Proportional to 20,488,641.24, 28,274,315.58 and 11,321,203.80
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Solution
The fourth proportional to 20,488,641.24, 28,274,315.58 and 11,321,203.80 is: 15,623,256.09
Step by Step Solution
- Step 1: Write the proportion equation
20,488,641.24 : 28,274,315.58 = 11,321,203.80 : x - Step 2: Convert to fraction form
20,488,641.24/28,274,315.58 = 11,321,203.80/x - Step 3: Cross multiply
20,488,641.24x = 28,274,315.58 × 11,321,203.80 - Step 4: Simplify right side
20,488,641.24x = 320,099,288,986,695.19 - Step 5: Solve for x
x = 320,099,288,986,695.19/20,488,641.24 - Step 6: Final answer
x = 15,623,256.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.