Finding the Fourth Proportional to 20,408,073.84, 28,163,140.92 and 11,240,716.32
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Solution
The fourth proportional to 20,408,073.84, 28,163,140.92 and 11,240,716.32 is: 15,512,187.98
Step by Step Solution
- Step 1: Write the proportion equation
20,408,073.84 : 28,163,140.92 = 11,240,716.32 : x - Step 2: Convert to fraction form
20,408,073.84/28,163,140.92 = 11,240,716.32/x - Step 3: Cross multiply
20,408,073.84x = 28,163,140.92 × 11,240,716.32 - Step 4: Simplify right side
20,408,073.84x = 316,573,877,761,903.81 - Step 5: Solve for x
x = 316,573,877,761,903.81/20,408,073.84 - Step 6: Final answer
x = 15,512,187.98
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1.5x scale
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.