Finding the Fourth Proportional to 20,871,417.21, 31,306,814.77 and 7,234,490.49
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Solution
The fourth proportional to 20,871,417.21, 31,306,814.77 and 7,234,490.49 is: 10,851,627.92
Step by Step Solution
- Step 1: Write the proportion equation
20,871,417.21 : 31,306,814.77 = 7,234,490.49 : x - Step 2: Convert to fraction form
20,871,417.21/31,306,814.77 = 7,234,490.49/x - Step 3: Cross multiply
20,871,417.21x = 31,306,814.77 × 7,234,490.49 - Step 4: Simplify right side
20,871,417.21x = 226,488,853,725,756.53 - Step 5: Solve for x
x = 226,488,853,725,756.53/20,871,417.21 - Step 6: Final answer
x = 10,851,627.92
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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.