Finding the Fourth Proportional to 20,804,957.80, 31,207,436.70 and 18,285,533.80
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Solution
The fourth proportional to 20,804,957.80, 31,207,436.70 and 18,285,533.80 is: 27,428,300.70
Step by Step Solution
- Step 1: Write the proportion equation
20,804,957.80 : 31,207,436.70 = 18,285,533.80 : x - Step 2: Convert to fraction form
20,804,957.80/31,207,436.70 = 18,285,533.80/x - Step 3: Cross multiply
20,804,957.80x = 31,207,436.70 × 18,285,533.80 - Step 4: Simplify right side
20,804,957.80x = 570,644,638,589,210.50 - Step 5: Solve for x
x = 570,644,638,589,210.50/20,804,957.80 - Step 6: Final answer
x = 27,428,300.70
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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.