Finding the Fourth Proportional to 28,471,320, 39,290,216.08 and 15,418,276.08
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Solution
The fourth proportional to 28,471,320, 39,290,216.08 and 15,418,276.08 is: 21,277,109.69
Step by Step Solution
- Step 1: Write the proportion equation
28,471,320 : 39,290,216.08 = 15,418,276.08 : x - Step 2: Convert to fraction form
28,471,320/39,290,216.08 = 15,418,276.08/x - Step 3: Cross multiply
28,471,320x = 39,290,216.08 × 15,418,276.08 - Step 4: Simplify right side
28,471,320x = 605,787,398,764,295.38 - Step 5: Solve for x
x = 605,787,398,764,295.38/28,471,320 - Step 6: Final answer
x = 21,277,109.69
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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.