Finding the Fourth Proportional to 20,828,338,694.73, 28,742,618,521.17 and 12,255,320,601.99
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Solution
The fourth proportional to 20,828,338,694.73, 28,742,618,521.17 and 12,255,320,601.99 is: 16,912,054,776.93
Step by Step Solution
- Step 1: Write the proportion equation
20,828,338,694.73 : 28,742,618,521.17 = 12,255,320,601.99 : x - Step 2: Convert to fraction form
20,828,338,694.73/28,742,618,521.17 = 12,255,320,601.99/x - Step 3: Cross multiply
20,828,338,694.73x = 28,742,618,521.17 × 12,255,320,601.99 - Step 4: Simplify right side
20,828,338,694.73x = 352,250,004,917,634,007,040 - Step 5: Solve for x
x = 352,250,004,917,634,007,040/20,828,338,694.73 - Step 6: Final answer
x = 16,912,054,776.93
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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.