Finding the Fourth Proportional to 21,209,037.95, 29,268,497.20 and 12,041,680.70
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Solution
The fourth proportional to 21,209,037.95, 29,268,497.20 and 12,041,680.70 is: 16,617,533.46
Step by Step Solution
- Step 1: Write the proportion equation
21,209,037.95 : 29,268,497.20 = 12,041,680.70 : x - Step 2: Convert to fraction form
21,209,037.95/29,268,497.20 = 12,041,680.70/x - Step 3: Cross multiply
21,209,037.95x = 29,268,497.20 × 12,041,680.70 - Step 4: Simplify right side
21,209,037.95x = 352,441,897,851,244 - Step 5: Solve for x
x = 352,441,897,851,244/21,209,037.95 - Step 6: Final answer
x = 16,617,533.46
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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.